Create and edit regular expressions

Regular expressions help you locate key data points in your contracts—such as dates, currency amounts, durations, and custom patterns—by defining text patterns that Contracts matches against your document text. You can use regular expressions to highlight and extract data that informs coding decisions and auto-populates fields during review.

You can create regular expressions directly in the Contracts Viewer, adjust them, and see matching results in real time on the document you're viewing. You can also preview results in list format across up to 100 additional documents.

Create regular expressions in the Contracts Viewer

To create a regular expression in the Contracts Viewer:

1. Click Search in the viewer toolbar.
2. Click the Regular Expression search toggle.
   
3. Enter your regular expression pattern. Matching results appear beneath the search bar as you type.

4. Use the search navigation arrows, the minimap, or the document text to navigate between results and verify the pattern is matching as expected.

5. Click Save.
6. For advanced options, click to expand the Regular Expression Details section.
   
   
7. Name your regular expression by entering a Friendly Name.
8. Filter your regular expression's hits by choosing a Saved Search Filter.
9. Select a Background Color to customize how highlights appear in the viewer.
10. Toggle the Visible In Contracts Viewer option to control whether it displays in the Data Points pane.
11. You can choose to Preview Results on Other Documents.
12. Preview Segmentation if you want to use the regular expression to segment documents.
13. If you want the regular expression to be case sensitive, select the Ab icon on the search bar to enable case sensitive search.
14. Click Save.

15. Your regular expression will show up in the data points pane in the left navigation of the viewer.

Edit regular expressions in the Contracts Viewer

To edit regular expressions in the Contracts Viewer:

1. To edit an existing regular expression within the Contracts Viewer, right-click on the regular expression found on the left side of the Viewer under Data Points.
2. Click Edit.
3. The search bar with your regular expression will appear at the top of the Viewer. You can edit the regular expression and view changes to results returned in real time.
   
   
4. Click Save to update that regular expression or Save as New to create a new regular expression.

Create regular expressions in Relativity

Though it's best to create regular expressions in the Viewer, you can also use the Contracts Regular Expressions tab from the Contracts application in Relativity:

1. Navigate to the Contracts Regular Expressions tab.
   
2. Click New Contracts Regular Expression from the Contracts Regular Expressions tab.
3. Add a Name of the regular expression as it will appear in the Data Points pane of the Viewer.
4. Add a regular expression string.
5. Provide a description of the regular expression.
6. Add a saved search filter to your regular expression.
   For example, if you create a saved search of only Termination sections, your date regular expression will only highlight hits if they are in a Termination section.
7. Toggle visibility by checking the Visible In Contracts Viewer box.
8. Select a Background Color for the regular expression as displayed in the Viewer.
9. Click Save.

Edit regular expressions in Relativity

To edit regular expressions in Relativity:

1. Click the Edit button to the left of a regular expression from your list.
2. Edit any of your regular expression's information.
3. Click Save.

Highlight capture groups

Use highlight capture groups to match and highlight only a specific portion of a regular expression pattern. This is useful when you want to find data that follows a known term — for example, finding the date that follows "Maturity Date" or the state name that follows "governed by the laws of."

To use a capture group, wrap the portion of your pattern you want to highlight with (?<highlight>...).

Example: You want to find the word "important" only when it follows "something." Use the pattern:

something (?<highlight>important)

Contracts highlights all instances of "important" that follow "something." If you use this regular expression to auto-populate a text field, Contracts populates the field with the first occurrence of "important" that follows "something."

Common contract review scenarios for capture groups

• The term "Maturity Date" is typically followed by the date you want to extract. Use a capture group around the date pattern to highlight only the date.
• Variations of "as governed by the laws of" precede a state name. Use a capture group around the state pattern to capture only the jurisdiction.

If you use regular expression segmentation with capture groups, the text matched by your capture group populates the Section Heading field.

Regular expression building blocks

When you are building a regular expression in the Contracts Viewer, you have the option of referencing an existing regular expression or persistent highlight set as a block instead of having to write out a tedious pattern.

For example, let's say you want to write a regular expression that can find the Effective Date of a contract. There are some variations of the term "effective as of" that usually precede the date you're looking for. You can write a regular expression to capture all of these variations and name it Effective Term.

Writing a regular expression to capture every possible variation of how dates are formatted is a large endeavor and one that Contracts addresses with its included Date regular expression. In this example, you could reference your Effective Date regular expression and reference Contracts 's Date regular expression.

Considerations

Things to keep in mind when using building blocks:

• Do not reference a regular expression or persistent highlight set that has been deleted. If the referenced block no longer exists, your regular expression will not return results.
• Do not create circular references where two building blocks reference each other. Circular dependencies prevent results from returning.

How to use building blocks

To use regex building blocks:

1. In the Contracts Viewer, click the Regular Expression Toggle to the right of the search bar.
2. Type the @ symbol to bring up a menu of existing regular expressions in your workspace.
   
   Persistent highlight sets will also show up in this list. If you @ reference a persistent highlight set Contracts will understand that as, "this block means ANY of the terms in this highlight set".
3. Select your Effective Term regular expression that, for purposes of this example, you previously created in the Contracts Viewer.
4. Type .{1,200} which means within 200 characters of.
5. Type the @ symbol again and select the Contracts Date regular expression:

By using building blocks, you're able to identify the Effective Date.

You can use highlight capture groups to only match on the date and nothing else. Put your date block in parentheses and precede it with "?<highlight>:

Filter regular expressions by saved searches

If you create a saved search of sections and select it as a Regular Expression Filter, the regular expression will only show hits if they are within sections from your saved search. For example, filtering the Contracts Date regular expression by all Termination sections will not show hits if they are within sections other than Termination sections.

If you create a saved search of contracts, the regular expression will only show hits if they are within contracts from your saved search. For example, filtering a Payment Terms regular expression by all Leases will not show hits in any contracts other than Leases.

To avoid confusion, your saved search filters should consist of either sections or contracts, but not both.

Apply filters to regular expressions

1. Navigate to the Contracts Regular Expressions tab and select New Contracts Regular Expression.
2. On the Regular Expression Filter card, select your saved search for the Saved Search Filter field.
3. All filtered matches are displayed in the Data Points pane in the Contracts Viewer, along with other non-filtered regular expressions.
   A filtered match is signified by the funnel icon.

Example scenario

In the following example, we have created a Saved Search that filters down to display only my “Term, Termination, and Renewal” section types.

• Based on patterns found reviewing other contracts, if that section contains a date, 9 out of 10 times it contains the termination date we're looking for.
• Edit the Contracts Date regular expression to be applied on the example Saved Search mentioned above.
• Add to an Analysis Profile or enable in the Contracts Viewer to review results.

As an example, your documents will fall into one of these categories:

• Termination Section Not Present -> Dates Present in Contract -> No Highlights
• Termination Section Present -> Dates Not Present in Termination Section -> No Highlights
• Termination Section Present -> Date Present in Termination Section -> Highlights Present

Regular expressions included with Contracts

Contracts ships with the following regular expressions. You can use these as building blocks in your own patterns or apply them directly to your documents.

Type	What it finds	Examples	RegEx
Date	All variations of date formats, including numeric and written-out months.	8/1/18, First of August, Aug 1st 2018	(?x)(?(DEFINE)(?<month_string>(Jan(uary)?|Feb(ruary)?|Mar(ch)?|Apr(il)?|May|Jun(e)?|Jul(y)?|Aug(ust)?|Sep(tember)?|Oct(ober)?|Nov(ember)?|Dec(ember)?))(?<day_number>\d{1,2})(?<year_number>\d{2,4})(?<month_number>\d{1,2}))(?:(?<day_1>(?&day_number))(?:\s+|-)?(?<month_1>(?&month_string)),?(?:\s+|-)?(?<year_1>(?&year_number))|(?<day_2>(?&day_number))(?:st|nd|rd|th)?\s*day\s*of\s*(?<month_2>(?&month_string)),?\s*(?<year_2>(?&year_number))|(?<month_3>(?&month_string))(?:\s*|-)(?<day_3>(?&day_number))(?:st|nd|rd|th)?,?(?:\s+|-)?(?<year_3>(?&year_number))|(?<month_4>(?&month_string)),?\s+(?<year_4>(?&year_number)))|(?:(?&day_number)(?:\/|-)(?&month_number)(?:\/|-)(?&year_number)|(?&year_number)(?:\/|-)(?&month_number)(?:\/|-)(?&day_number))
Duration	Textual and numeric periods of time.	thirty days, 1 month, per month	(?x)(?(DEFINE)(?<one_to_9>(?:f(?:ive|our)|s(?:even|ix)|t(?:hree|wo)|(?:ni|o)ne|eight))(?<ten_to_19>(?:(?:(?:s(?:even|ix)|f(?:our|if)|nine)te|e(?:ighte|lev))en|t(?:(?:hirte)?en|welve)))(?<two_digit_prefix>(?:s(?:even|ix)|t(?:hir|wen)|f(?:if|or)|eigh|nine)ty)(?<one_to_99>(?&two_digit_prefix)(?:[- ](?&one_to_9))?|(?&ten_to_19)|(?&one_to_9))(?<one_to_999>(?&one_to_9)[ ]hundred(?:[ ](?:and[ ])?(?&one_to_99))?|(?&one_to_99))(?<one_to_999_999>(?&one_to_999)[ ]thousand(?:[ ](?&one_to_999))?|(?&one_to_999))(?<one_to_999_999_999>(?&one_to_999)[ ]million(?:[ ](?&one_to_999_999))?|(?&one_to_999_999))(?<one_to_999_999_999_999>(?&one_to_999)[ ]billion(?:[ ](?&one_to_999_999_999))?|(?&one_to_999_999_999))(?<one_to_999_999_999_999_999>(?&one_to_999)[ ]trillion(?:[ ](?&one_to_999_999_999_999))?|(?&one_to_999_999_999_999))(?<bignumber>zero|(?&one_to_999_999_999_999))(?<periods>((quarter|month|week|day)(ly|s)?)(\s+period)?)(?<first_last>(?:first\s+|last\s+)?(quarter(s)?|month(s)?|week(s)?|day(ly|s)?)?\s+of\s+(?:a|the)\s+(year|quarter|month|week))(?<cadence>\b(year|quarter|month|week|day|dai)(s|ly)?\b))(zero|(?&one_to_999)\s)?(\(\d+\)|\d+)\s*-?(\s*\w+\s*){0,2}years?(\s+period)?|(zero|(?&one_to_999)\s*)-?years?(\s+period)?|((each)(-|\s+)?)?calendar(-|\s+)?(year)|((bi|semi|current)(-|\s)?)(year(ly)?)|((bi|semi|per)(-|\s)?)?(annual(ly)?|annum)|(once|twice)(-|\s)?(per|a)(-|\s)?year|(zero|(?&one_to_99)\s)?(\(\d+\)|\d+)(-?\s?)(?&periods)|\(?\d+\)?(-?\s?)(\s+\w+\s+){1,3}(quarter(ly|s)?)|((bi|semi|per)(-|\s)?)(quarter(ly)?)|quarter(-|\s)?to(-|\s)?quarter|calendar\s+quarters?|each\s+quarters?|(zero|(?&one_to_99)\s)?(\(\d+\)|\d+)(-?|\s?)(?&periods)|(every\s+)(zero|(?&one_to_99)\s)?(\(?\d+\)?)?(-?|\s?)(?&periods)|\(?\d+\)?(-?\s?)(\s+\w+\s+){1,3}(month(ly|s)?)|((bi|semi|per)(-|\s)?)(month(ly)?)|month(-|\s)?to(-|\s)?month|calendar\s+months?|(((?:\d{1,2}(st|nd|rd|th))|(first|last|once|twice))(\s+of)?\s+)?(a|the|each)\s+month|(zero|(?&one_to_99)\s)?(\(\d+\)|\d+)(-?\s?)(?&periods)|(\(\d+\)|\d+)(-?\s?)(\s+\w+\s+){1,3}(week(ly|s)?)(\s+period)?|((bi|semi|per)(-|\s)?)(week(ly)?)|week(-|\s)?to(-|\s)?week|(net\s+)?(zero|(?&one_to_999_999_999_999)\s)?\(?[1-9]\d*\)?(-?\s?)?(?&periods)|(zero|(?&one_to_999_999_999_999)\s)?\(?[1-9]\d*\)?(-?\s?)(\s+\w+\s*){1,3}(day(ly|s)?)|(next|last)(\s+\w+\s+){1,3}(day(ly|s)?)|day(-|\s)?to(-|\s)?day|(?&first_last)|(?&cadence)
Currency	Monetary values in common formats.	$29.00, twenty-nine dollars	(€|\$|£)\s*(\d{1,3}(\,?\d{3}|\d+)*|(\d+))((\.\d+)?[K|M|B]?)
N	Numeric values that contain the percent (%) symbol.	3.45% Base Rate, 100% of compensation	\.?\d+(?:\.\d+)?\s*%
Reference	References to sections or subsections across the document.	to Section 18, in Section 4(d)	\b(?<prefix>[Ii]n|[Bb]y|[Ww]ith|[Oo]f|[Uu]nder|[Tt]o|[Ii]ncluding|[Pp]er|[Tt]his|[Nn]otwithstanding|[Oo]r|[Tt]he|[An]d)[.,'\s]+(?<descriptor>[Ss]ection|[Pp]aragraph|[Ss]ections|[Cc]lause|[Cc]lauses)[.,'\s]+(?<subsection>(?<section>(?:\d+|(?:\(?\w+\)?){1}))(?:[.,'\s][0-9]+)*)(?<inner>(?:\(\w+\))+)?
Numbers	Numeric values including decimals and formatted numbers.	1,000, 3.5, 100	((\d{1,3}(\,?\d{3}|\d+)*|(\d+))(\.\d+)?)
State names	Long state names as well as their short names.	Michigan, IN, IL, Montana	(Alabama|Alaska|Arizona|Arkansas|California|Colorado|Connecticut|Delaware|Florida|Georgia|Hawaii|Idaho|Illinois|Indiana|Iowa|Kansas|Kentucky|Louisiana|Maine|Maryland|Massachusetts|Michigan|Minnesota|Mississippi|Missouri|Montana|Nebraska|Nevada|New\s*Hampshire|New\s*Jersey|New\s*Mexico|New\s*York|North\s*Carolina|North\s*Dakota|Ohio|Oklahoma|Oregon|Pennsylvania|Rhode\s*Island|South\s*Carolina|South\s*Dakota|Tennessee|Texas|Utah|Vermont|Virginia|Washington|West\s*Virginia|Wisconsin|Wyoming)|(AL|AK|AZ|AR|CA|CO|CT|DE|FL|GA|HI|ID|IL|IN|IA|KS|KY|LA|ME|MD|MA|MI|MN|MS|MO|MT|NE|NV|NH|NJ|NM|NY|NC|ND|OH|OK|OR|PA|RI|SC|SD|TN|TX|UT|VT|VA|WA|WV|WI|WY)
Social security numbers	Social Security numbers.	111-11-1111	\d{3}-\d{2}-\d{4}
Country names	Country names.	Afghanistan, Germany, Cameroon	Afghanistan|Albania|Algeria|Andorra|Angola|Antigua\s{0,4}and\s{0,4}Barbuda|Argentina|Armenia|Australia|Austria(n\s{0,4}Empire)?|Azerbaijan|Baden|Bahamas|Bahrain|Bangladesh|Barbados|Bavaria|Belarus|Belgium|Belize|Benin|Bolivia|Bosnia\s{0,4}and\s{0,4}Herzegovina|Botswana|Brazil|Brunei|Brunswick\s{0,4}and\s{0,4}Lüneburg|Bulgaria|Burkina\s{0,4}Faso|Burma|Burundi|Cabo\s{0,4}Verde|Cambodia|Cameroon|Canada|Cayman\s{0,4}Islands|Central\s{0,4}African\s{0,4}Republic|Central\s{0,4}American\s{0,4}Federation|Chad|Chile|China|Colombia|Comoros|Congo\s{0,4}Free\s{0,4}State|Costa\s{0,4}Rica|Cote\s{0,4}d’Ivoire|Croatia|Cuba|Cyprus|Czechia|Czechoslovakia|Democratic\s{0,4}Republic\s{0,4}of\s{0,4}the\s{0,4}Congo|Denmark|Djibouti|Dominica(n\s{0,4}Republic)?|Duchy\s{0,4}of\s{0,4}Parma|East\s{0,4}Germany|Ecuador|Egypt|El\s{0,4}Salvador|Equatorial\s{0,4}Guinea|Eritrea|Estonia|Eswatini|Ethiopia|Federal\s{0,4}Government\s{0,4}of\s{0,4}Germany|Fiji|Finland|France|Gabon|Gambia|Georgia|Germany|Ghana|Grand\s{0,4}Duchy\s{0,4}of\s{0,4}Tuscany|Greece|Grenada|Guatemala|Guinea(-Bissau)?|Guyana|Haiti|Hanover|Hanseatic\s{0,4}Republics|Hawaii|Hesse|Holy\s{0,4}See|Honduras|Hungary|Iceland|India|Indonesia|Iran|Iraq|Ireland|Israel|Italy|Jamaica|Japan|Jordan|Kazakhstan|Kenya|Kingdom\s{0,4}of\s{0,4}Serbia/Yugoslavia|Kiribati|Korea|Kosovo|Kuwait|Kyrgyzstan|Laos|Latvia|Lebanon|Lesotho|Lew\s{0,4}Chew|Liberia|Libya|Liechtenstein|Lithuania|Luxembourg|Madagascar|Malawi|Malaysia|Maldives|Mali|Malta|Marshall\s{0,4}Islands|Mauritania|Mauritius|Mecklenburg-Schwerin|Mecklenburg-Strelitz|Mexico|Micronesia|Moldova|Monaco|Mongolia|Montenegro|Morocco|Mozambique|Namibia|Nassau|Nauru|Nepal|Netherlands|New\s{0,4}Zealand|Nicaragua|Niger(ia)?|North\s{0,4}German\s{0,4}Confederation|North\s{0,4}German\s{0,4}Union|North\s{0,4}Macedonia|Norway|Oldenburg|Oman|Orange\s{0,4}Free\s{0,4}State|Pakistan|Palau|Panama|Papal\s{0,4}States|Papua\s{0,4}New\s{0,4}Guinea|Paraguay|Peru|Philippines|Piedmont-Sardinia|Poland|Portugal|Qatar|Republic\s{0,4}of\s{0,4}Genoa|Republic\s{0,4}of\s{0,4}Korea|Republic\s{0,4}of\s{0,4}the\s{0,4}Congo|Romania|Russia|Rwanda|Saint\s{0,4}Kitts\s{0,4}and\s{0,4}Nevis|Saint\s{0,4}Lucia|Saint\s{0,4}Vincent\s{0,4}and\s{0,4}the\s{0,4}Grenadines|Samoa|San\s{0,4}Marino|Sao\s{0,4}Tome\s{0,4}and\s{0,4}Principe|Saudi\s{0,4}Arabia|Schaumburg-Lippe|Senegal|Serbia|Seychelles|Sierra\s{0,4}Leone|Singapore|Slovakia|Slovenia|Solomon\s{0,4}Islands|Somalia|South\s{0,4}Africa|South\s{0,4}Sudan|Spain|Sri\s{0,4}Lanka|Sudan|Suriname|Sweden|Switzerland|Syria|Tajikistan|Tanzania|Texas|Thailand|Timor-Leste|Togo|Tonga|Trinidad\s{0,4}and\s{0,4}Tobago|Tunisia|Turkey|Turkmenistan|Tuvalu|Two\s{0,4}Sicilies|Uganda|Ukraine|Union\s{0,4}of\s{0,4}Soviet\s{0,4}Socialist\s{0,4}Republics|United\s{0,4}Arab\s{0,4}Emirates|United\s{0,4}Kingdom|Uruguay|Uzbekistan|Vanuatu|Venezuela|Vietnam|Württemberg|Yemen|Zambia|Zimbabwe
Letters	English letters A-Z and a-z.	A, B, c, d	[A-Za-z]+
Whitespace	White-space characters.		\s+
Phone numbers	Phone numbers that match the North America Numbering Plan (NANP).	1-234-456-7890	(\+1\s+)?\(?\d{3}\)?(\s{1,4}|-| )?\d{3}(-| )?\d{4}
Anything	Anything in the text equivalent to (.|\s){1,500} in Regex.		(.|\s){1,500}
Anything but whitespace	Anything in the text equivalent to \S+ in Regex.		\S+
Section headings	Headings of a section that could help with segmentation.	1. Confidentiality, 7. Entire Agreement, Article 1	^\s*(ARTICLE|Article|Section|SECTION)\s+(\d+|[XVILDCM]+)

Regular expression library

Following is a library of regular expressions to help you uncover key data points hidden deep in contracts across various review projects.

Contracts uses PCRE for it's regular expression engine. It has full support for Unicode characters, which includes Chinese, Japanese, and Korean (CJK) contracts.

Type	Possible results	RegEx
Assignment	will be assignable, will be assigned, will not be assignable, will not be assigned, shall be assigned, shall be assignable, shall not be assigned, shall not be assignable, may be assigned, may be assignable, may not be assigned, may not be assignable, may assign, may not assign.	(?<highlight>will\s*(?:be\s)?assign(?:ed|able)?|shall\s*(?:not\s*be\s*|be\s*)assign(?:able\s*|ed\s*)|may\s*(?:not\s*be\s*|be\s*)assign(?:able|ed)|(?:may\s*not\s*|may\s*)assign|will\s*not\s*be\s*assign(?:ed|able)?)
Audit	audit, audits, auditor, auditors, auditing, audited, audit team, audit teams, audit rights, audit privileges, right to audit, right for audit, privileges to audit, obligation to audit,audit obligation.	(?<highlight>(?:obligations?\s*(?:to\s*|for\s*)|rights?\s*(?:to\s*|for\s*)?|privileges?\s*(?:to\s*|for\s*)?)?audit(?:s|ed|ing|ors?)?\s*(?:obligations?|teams?|rights?|privileges?)?)
Beneficiary	contingent income beneficiary, primary income beneficiary, secondary income beneficiary, creditor income beneficiary, direct beneficiary, donee beneficiary, incidental beneficiary, third party beneficiary, benefactor, and all variations and conjugations.	(?<highlight>contingent\s+income\s+beneficiary|primary\s+income\s+beneficiary|secondary\s+income\s+beneficiary|creditor\s+income\s+beneficiary|direct\s+beneficiary|donee\s+beneficiary|incidental\s+beneficiary|third\sparty\sbeneficiary|benef(?:actors?|iciar(?:y|ies)?))
Change in control	change of control, changes of control, change in control, changes in control	changes?(\s+?in|\s+?of)\s+?control
Civil authority language	Language that may deal with business interruption coverage based on Civil Authority	(\b(loss)\W+(?:\w+\W+){0,60}?\b(local authority|civil authority|military authority)\b)\W+?(?:\w+?\W+?){0,50}?(?:\.|\R\R)
Consent	consent notice, consent notices, notice of consent, notices of consent, notice to consent, notices to consent, notice for consent, notices for consent, without consent, with consent, written consent, with the consent, without the consent, with written consent, without written consent, consent in writing, with consent in writing, without consent in writing, prior consent	(?<highlight>(?:with(?:out)?\s*)?consent\s*(?:notices?|in\s*writing)|notices?\s*(?:of\s*|to\s*|for\s*)?consent|prior\s*consent|(?:with(?:out)?\s*)?(?:the\s*)?(?:writ(?:ten\s*|ing\s*)?(?:with(?:out)?\s*)?consent|(?:with(?:out)?\s*)?(?:the\s*)?consent))
Contract value	Principal loan amounts.	(\bissuance\s+?\w+(?:\w+\W+){1,20}\d+\s+\w+(?:\w+\W+){1,10}principal\b)|(\bloan\s+?\w+(?:\w+\W+){1,20}principal\b\s+\w+(?:\w+\W+){1,10}\d+)
Countries and states	All US states and countries.	(Alabama|Alaska|Arizona|Arkansas|California|Colorado|Connecticut|Delaware|Florida|Georgia|Hawaii|Idaho|Illinois|Indiana|Iowa|Kansas|Kentucky|Louisiana|Maine|Maryland|Massachusetts|Michigan|Minnesota|Mississippi|Missouri|Montana|Nebraska|Nevada|New\s*Hampshire|New\s*Jersey|New\s*Mexico|New\s*York|North\s*Carolina|North\s*Dakota|Ohio|Oklahoma|Oregon|Pennsylvania|Rhode\s*Island|South\s*Carolina|South\s*Dakota|Tennessee|Texas|Utah|Vermont|Virginia|Washington|West\s*Virginia|Wisconsin|Wyoming|District\s*of\s*Columbia|Afghanistan|Albania|Algeria|American\s*Samoa|Andorra|Angola|Anguilla|Antigua\s*&\s*Barbuda|Argentina|Armenia|Aruba|Australia|Austria|Azerbaijan|Bahamas|Bahrain|Bangladesh|Barbados|Belarus|Belgium|Belize|Benin|Bermuda|Bhutan|Bolivia|Bosnia\s*&\s*Herzegovina|Botswana|Brazil|British\s*Virgin\s*Islands|Virgin\s*Islands|Brunei|Bulgaria|Burkina\s*Faso|Burma|Burundi|Cambodia|Cameroon|Canada|Cape\s*Verde|Cayman\s*Islands|Central\s*African\s*Republic|Chad|Chile|China|Congo|Cook\s*Islands|Costa\s*Rica|Cote\s*d'Ivoire|Croatia|Cuba|Cyprus|Czech\s*Republic|Denmark|Djibouti|Dominica|Dominican\s*Republic|East\s*Timor|Ecuador|Egypt|El\s*Salvador|Equatorial\s*Guinea|Eritrea|Estonia|Ethiopia|Faroe\s*Islands|Fiji|Finland|France|French\s*Guiana|French\s*Polynesia|Gabon|The\s*Gambia|Gaza\s*Strip|Georgia|Germany|Ghana|Gibraltar|Greece|Greenland|Grenada|Guadeloupe|Guam|Guatemala|Guernsey|Guinea|Guinea\s*Bissau|Guinea.Bissau|Guyana|Haiti|Honduras|Hong\s*Kong|Hungary|Iceland|India|Indonesia|Iran|Iraq|Ireland|Isle\s*of\s*Man|Israel|Italy|Jamaica|Japan|Jersey|Jordan|Kazakhstan|Kenya|Kiribati|North\s*Korea|South\s*Korea|Kuwait|Kyrgyzstan|Laos|Latvia|Lebanon|Lesotho|Liberia|Libya|Liechtenstein|Lithuania|Luxembourg|Macau|Macedonia|Madagascar|Malawi|Malaysia|Maldives|Mali|Malta|Marshall\s*Islands|Martinique|Mauritania|Mauritius|Mayotte|Mexico|Micronesia|Moldova|Monaco|Mongolia|Montserrat|Morocco|Mozambique|Namibia|Nauru|Nepal|Netherlands|Netherlands\s*Antilles|New\s*Caledonia|New\s*Zealand|Nicaragua|Niger(?:ia)?|Mariana\s*Islands|Norway|Oman|Pakistan|Palau|Panama|Papua\s*New\s*Guinea|Paraguay|Peru|Philippines|Poland|Portugal|Puerto\s*Rico|Qatar|Reunion|Romania|Russia|Rwanda|Saint\s*Helena|Saint\s*Kitts\s*&\s*Nevis|Saint\s*Lucia|St\s*Pierre\s*&\s*Miquelon|Saint\s*Vincent\s*and\s*the\s*Grenadines|St\s*Vincent\s*and\s*the\s*Grenadines|Samoa|San\s*Marino|Sao\s*Tome\s*&\s*Principe|Sao\s*Tome\s*and\s*Principe|Saudi\s*Arabia|Senegal|Serbia|Seychelles|Sierra\s*Leone|Singapore|Slovakia|Slovenia|Solomon\s*Islands|Somalia|South\s*Africa|Spain|Sri\s*Lanka|Sudan|Suriname|Swaziland|Sweden|Switzerland|Syria|Taiwan|Tajikistan|Tanzania|Thailand|Togo|Tonga|Trinidad\s*&\s*Tobago|trinidad\s*and\s*tobago|Tunisia|Turkey|Turkmenistan|Turks\s*&\s*Caicos\s*Islands|Tuvalu|Uganda|Ukraine|United\s*Arab\s*Emirates|United\s*Arabic\s*Emirates|United\s*Kingdom|UK|United\s*States(?:\s*of\s*America)?|\s+USA\s+|\s+U\.S\.A\.\s+|Uruguay|Uzbekistan|Vanuatu|Venezuela|Vietnam|Virgin\s*Islands|Wallis\s*and\s*Futuna|West\s*Bank|Western\s*Sahara|Yemen|Zambia|Zimbabwe)
Date	Dates in many different formats. Can be customized to find dates that come before or after specific keywords of text.	(?x)(?(DEFINE)(?<month_string>(Jan(uary)?|Feb(ruary)?|Mar(ch)?|Apr(il)?|May|Jun(e)?|Jul(y)?|Aug(ust)?|Sep(tember)?|Oct(ober)?|Nov(ember)?|Dec(ember)?))(?<day_number>\d{1,2})(?<year_number>\d{2,4})(?<month_number>\d{1,2}))(?:(?<day_1>(?&day_number))(?:\s+|-)?(?<month_1>(?&month_string)),?(?:\s+|-)?(?<year_1>(?&year_number))|(?<day_2>(?&day_number))(?:st|nd|rd|th)?\s*day\s*of\s*(?<month_2>(?&month_string)),?\s*(?<year_2>(?&year_number))|(?<month_3>(?&month_string))(?:\s*|-)(?<day_3>(?&day_number))(?:st|nd|rd|th)?,?(?:\s+|-)?(?<year_3>(?&year_number))|(?<month_4>(?&month_string)),?\s+(?<year_4>(?&year_number)))|(?:(?&day_number)(?:\/|-)(?&month_number)(?:\/|-)(?&year_number)|(?&year_number)(?:\/|-)(?&month_number)(?:\/|-)(?&day_number))
Force Majeure clause	Existence of a Force Majeure clause.	(?s)(?<=\.)(?:[^\.]*?)((?:(?i)(accidents?|acts? of (war|god|public enemie)s?|adverse weather conditions?|armed conflicts?|blockades?|chemical contamination|cyclones?|earthquakes?|embargoes?|epidemics?|explosions?|fires?|floods?|government (regulations?|nationalization)|illegal strikes?|ionizing radiationexplosion|labor disputes?|lightning|plagues?|radioactive contaminations?|rebellions?|riots?|sabotage|storms?|terrorism|tornados?|tsunamis?|typhoons?),\s.*?){3,})[^\.]*
Force Majeure notification (days)	Notice requirement, in days, for party to inform other of non-performance as a result of Force Majeure trigger.	\bforce\s+?\bmajeure\s+?(event\s+?)?(?<highlight>(?:\w+?\W+?){1,10}?days)\s+?\w+?(?:\w+?\W+?){1,10}?(notice|notify|notifies|notification)
Force Majeure notification (entire notice section)	Entire notice section of the Force Majeure clause.	(?x)(?(DEFINE)(?'p1'(?:(?i)\Wforce\sm[a-z]+\W)))(?(DEFINE)(?'p2'\Wnoti[a-z]+\W))(?s)(?<=\.)(?:[^\.]*?)(?:(?P>p1)(?:(?s)[^\.]*?)(?P>p2)|(?P>p2)(?:(?s)[^\.]*?)(?P>p1))[^\.]*
Force Majeure triggers	References to events that may trigger enforcement of Force Majeure clause.	(?i)(accidents?|acts? of (war|god|public enemie)s?|adverse weather conditions?|armed conflicts?|blockades?|chemical contamination|cyclones?|earthquakes?|embargos?|epidemics?|explosions?|fires?|floods?|government (regulations?|nationalization)|(?:threats? of)? strikes?|ionizing radiationexplosion|labor disputes?|lightning|plagues?|radioactive contaminations?|rebellions?|riots?|sabotage|storms?|terrorism|tornados?|tsunamis?|typhoons?)
Governing law	jurisdiction, applicable law, governing law, controlling law, governmental authority then displays a country or state per the spreadsheet located at the bottom of this page.	(?:\b(governed|construed|accordance|interprete?d?)\W+(?:\w+\W+){0,9}?\blaws?\b)\W+(?:\w+\W+){1,20}?(?<highlight>(Alabama|Alaska|Arizona|Arkansas|California|Colorado|Connecticut|Delaware|Florida|Georgia|Hawaii|Idaho|Illinois|Indiana|Iowa|Kansas|Kentucky|Louisiana|Maine|Maryland|Massachusetts|Michigan|Minnesota|Mississippi|Missouri|Montana|Nebraska|Nevada|New\s*Hampshire|New\s*Jersey|New\s*Mexico|New\s*York|North\s*Carolina|North\s*Dakota|Ohio|Oklahoma|Oregon|Pennsylvania|Rhode\s*Island|South\s*Carolina|South\s*Dakota|Tennessee|Texas|Utah|Vermont|Virginia|Washington|West\s*Virginia|Wisconsin|Wyoming|District\s*of\s*Columbia|Afghanistan|Albania|Algeria|American\s*Samoa|Andorra|Angola|Anguilla|Antigua\s*&\s*Barbuda|Argentina|Armenia|Aruba|Australia|Austria|Azerbaijan|Bahamas|Bahrain|Bangladesh|Barbados|Belarus|Belgium|Belize|Benin|Bermuda|Bhutan|Bolivia|Bosnia\s*&\s*Herzegovina|Botswana|Brazil|British\s*Virgin\s*Islands|Virgin\s*Islands|Brunei|Bulgaria|Burkina\s*Faso|Burma|Burundi|Cambodia|Cameroon|Canada|Cape\s*Verde|Cayman\s*Islands|Central\s*African\s*Republic|Chad|Chile|China|Congo|Cook\s*Islands|Costa\s*Rica|Cote\s*d'Ivoire|Croatia|Cuba|Cyprus|Czech\s*Republic|Denmark|Djibouti|Dominica|Dominican\s*Republic|East\s*Timor|Ecuador|Egypt|El\s*Salvador|Equatorial\s*Guinea|Eritrea|Estonia|Ethiopia|Faroe\s*Islands|Fiji|Finland|France|French\s*Guiana|French\s*Polynesia|Gabon|The\s*Gambia|Gaza\s*Strip|Georgia|Germany|Ghana|Gibraltar|Greece|Greenland|Grenada|Guadeloupe|Guam|Guatemala|Guernsey|Guinea|Guinea\s*Bissau|Guinea-Bissau|Guyana|Haiti|Honduras|Hong\s*Kong|Hungary|Iceland|India|Indonesia|Iran|Iraq|Ireland|Isle\s*of\s*Man|Israel|Italy|Jamaica|Japan|Jersey|Jordan|Kazakhstan|Kenya|Kiribati|North\s*Korea|South\s*Korea|Kuwait|Kyrgyzstan|Laos|Latvia|Lebanon|Lesotho|Liberia|Libya|Liechtenstein|Lithuania|Luxembourg|Macau|Macedonia|Madagascar|Malawi|Malaysia|Maldives|Mali|Malta|Marshall\s*Islands|Martinique|Mauritania|Mauritius|Mayotte|Mexico|Micronesia|Moldova|Monaco|Mongolia|Montserrat|Morocco|Mozambique|Namibia|Nauru|Nepal|Netherlands|Netherlands\s*Antilles|New\s*Caledonia|New\s*Zealand|Nicaragua|Niger(?:ia)?|Mariana\s*Islands|Norway|Oman|Pakistan|Palau|Panama|Papua\s*New\s*Guinea|Paraguay|Peru|Philippines|Poland|Portugal|Puerto\s*Rico|Qatar|Reunion|Romania|Russia|Rwanda|Saint\s*Helena|Saint\s*Kitts\s*&\s*Nevis|Saint\s*Lucia|St\s*Pierre\s*&\s*Miquelon|Saint\s*Vincent\s*and\s*the\s*Grenadines|St\s*Vincent\s*and\s*the\s*Grenadines|Samoa|San\s*Marino|Sao\s*Tome\s*&\s*Principe|Sao\s*Tome\s*and\s*Principe|Saudi\s*Arabia|Senegal|Serbia|Seychelles|Sierra\s*Leone|Singapore|Slovakia|Slovenia|Solomon\s*Islands|Somalia|South\s*Africa|Spain|Sri\s*Lanka|Sudan|Suriname|Swaziland|Sweden|Switzerland|Syria|Taiwan|Tajikistan|Tanzania|Thailand|Togo|Tonga|Trinidad\s*&\s*Tobago|trinidad\s*and\s*tobago|Tunisia|Turkey|Turkmenistan|Turks\s*&\s*Caicos\s*Islands|Tuvalu|Uganda|Ukraine|United\s*Arab\s*Emirates|United\s*Arabic\s*Emirates|United\s*Kingdom|\bUK\b|United\s*States(?:\s*of\s*America)?|\s+USA\s+|\s+U\.S\.A\.\s+|Uruguay|Uzbekistan|Vanuatu|Venezuela|Vietnam|Virgin\s*Islands|Wallis\s*and\s*Futuna|West\s*Bank|Western\s*Sahara|Yemen|Zambia|Zimbabwe))
LIBOR impact	LIBOR, LIBO rate, LIBOR rate, LIBOR loan, LIBO rate loan, LIBOR rate loan, Adjusted LIBOR, Adjusted LIBO rate, Adjusted LIBOR rate, London Interbank Offered Rate, London Inter-Bank Offered Rate, London Inter Bank Offered Rate, BBA LIBOR, ICE LIBOR, LIBOR Daily Floating Rate, LIBO Daily Floating Rate, Eurodollar rate, LIBOR Rate Election, LIBO Rate Election.	(?<highlight>libor\s+?(?:rate\s+?)?(?:loan|election)|libo\s+?rate\s+?(?:loan|election)|libo\s+?daily\s+?floating\s+?rate|libor\s+?daily\s+?floating\s+?rate|(?:adjusted\s+?)?libor(?:\s+?rate(?:\s+?loan)?)?|(?:adjusted\s+?)?libo(?:\s+?rate(?:\s+?loan)?)?|london\s+?inter(?:.?|\-?)?bank\s+?offered\s+?rate|(?:bba|ice)\s+?libor|euro.?dollar\s+?rate)
LIBOR fallback terms (general)	alternate fallback rate, alternate rate, alternate successor rate, alternative fallback rate, alternative rate, alternative reference rates, alternative successor rate fall back, fall back rate, fallback, fallback rate, inability to determine, rate fallback, rate is suspended, rate successor, rate suspension, successor, successor rate, suspend rate, suspension of rate, unlikely to be temporary.	(?<highlight>fall(?:.)?back(?:\s+?rates?)?|successor(?:\s+?rates?)?|alternat(?:e|ive)\s+?(?:successor\s+?|reference\s+?|fall(?:.)?back\s+?)?rates?|suspen(?:d\s+?|sion\s+?)(?:of\s+?)?rates?|rate\s+?(?:is\s+?|becomes\s+?|will\s+?be\s+?)?suspe(?:nded|nsion)|rate\s+?(?:fall(?:.)?back|successor)|unlikely\s+?to\s+?be\s+?temporary|inability\s+?to\s+?determine)
LIBOR fallback language (specific)	Tailored references to fallback language.	(\bborrowing\s+\w+(?:\w+\W+){1,20}alternate\s+\w+(?:\w+\W+){1,20}libor?\s+\w+(?:\w+\W+){1,20}administrative\b)|(\bsuspension\s+\w+(?:\w+\W+){1,20}libor?\s+\w+(?:\w+\W+){1,20}provisions\b)
LIBOR obligations	Calculation agent, option to determine, option to establish, option to propose, option to elect, option to vote, required lenders, required parties, cost of fund, extend rate, rate extension, maturity date extension, extend maturity date.	calculation\s*agent|option\s*to\s*determine|option\s*to\s*establish|option\s*to\s*propose|option\s*to\s*vote|prepayments?|required\s*lenders?|convert\s*rates?|cost\s*of\s*funds?|rate\s*extension|increased\s*cost|maturity\s*date|unlikely\s*to\s*be\s*temporary|restrictions\s*on\s*repayment|repayment\s*restrictions|restrictions\s*to\s*repay
LIBOR reference	References to a LIBOR rate.	\bloans\s+?\w+(?:\w+\W+){1,20}interest\b\s+?\w+(?:\w+\W+){1,20}adjusted\s+?\blibor?
Notification address	In contracts that define events where either party may not be able to fulfill their commitments, there is often a section to notify the other party of such an event. These clauses often list the requirement of written notice to be delivered to a specific address.	(?<=Address:|Company:|Contractor:|Grant:|Licensee:|Notice:|Notify:|Contractor\sshall\sbe:|Company\sshall\sbe:)\s+(?<highlight>(.*\R){3,8}?)(\R\R?|Company:\s|Contractor:\s|Licensee:\s|Notice:\s|Notify:\s)
Maturity	Maturity, Maturity Date followed by any identified date that ensues.	(?:(?:(?:maturity(?:\s+?(?:date\s*o?f?\s*?)?(?:\s+?|\:(?:\s+(?:\R+|\r+)?|\;(?:\s+?|\r{1,2})?|\.(?:\s+?|\r{1,2})|\,(?:\s+?|\r{1,2}))))))|(?:matur(?:e|ing|ed|ity)(?:\s+?of|\s+?on)(?:\s+?|\:\s+?|\r{1}?|\r{1,2})|(?:\s+?on(?:\s+?|\r{1,2})?)))(?<highlight>(?:January|(February|March|April|May|June|July|August|September|October|November|December))\s+?\d+(?:th)?\,?\s+?\d{2,4})
Party address	Addresses and locations of parties, often in the introduction of the contract. Follows the basic format "Example Company having its principal place of business at 1969 Upper Water Street, Suite 900, Halifax, NS, B3J 3N2 (hereinafter referred to as “Contractor”)". The underline represents the regex result.	(office|place of business)(.|\R){0,50}(\bat\b|\bin\b)(?<highlight>[\W\w]{5,250}?)(?=(\(\bhere|\brefer|\(("|“|')|\band\b))
Production end (oil and gas)	ending production, abandon production, ceasing production, closing production, conclude production, concluding production, suspend production, market the production, suspending production, discontinuing production, ending production, halt production, halting production, interrupt production, terminate production, market product, market producing, market production, marketing production, marketed production, interrupting production, pause production, pausing production, suspending production, non producing, non production, non-producing, non-production , production abandonment, production closure, production conclusion, production discontinuation, production end, production halt, production interruption, production pausing, production stoppage, production suspension, production termination, abandonment of production, ceasing to produce, cessation of production, cessation to produce, close of production, conclusion of production, suspension of production, termination of production, discontinuance of production, discontinuation of production, interruption of production, market the product, market the production, marketing production, marketing the production	(?<highlight>end(?:ing)?\s*(?:the\s*)?produc(?:ing|tion)|suspend(?:ing)?(?:the\s*)?\s*produc(?:ing|tion)|abandon(?:ing)?(?:the\s*)?\s*produc(?:ing|tion)|ceas(?:e|ing)?(?:the\s*)?\s*produc(?:ing|tion)|clos(?:e|ing)?\s*(?:the\s*)?produc(?:ing|tion)|conclud(?:e|ing)?\s*(?:the\s*)?produc(?:ing|tion)|discontinu(?:e|ing)?\s*(?:the\s*)?produc(?:ing|tion)|halt(?:ing)?\s*(?:the\s*)?produc(?:ing|tion)|interrupt(?:ing)?\s*(?:the\s*)?produc(?:ing|tion)|terminat(?:e|ing|ion\s*)?\s*(?:the\s*)?produc(?:ing|tion)|market(?:ed|ing)?\s*(?:the\s*)?produc(?:ing|tion)?|paus(?:e|ing)?\s*(?:the\s*)?produc(?:ing|tion)|production\s*suspension|production\s*termination|production\s*abandonment|production\s*closure|production\s*conclusion|production\s*discontinuation|production\s*end|production\s*halt|production\s*interruption|production\s*paus(?:e|ing)?|production\s*stoppage|abandonment\s*of\s*production|ceasing\s*the\s*production|ceasing\s*to\s*produce|cessation\s*(?:of\s*|to\s*)?produc(?:e|tion)?|close\s*of\s*production|conclusion\s*of\s*production|suspension\s*of\s*production|termination\s*of\s*production|discontinuance\s*of\s*production|discontinuation\s*of\s*production|interruption\s*of\s*production|market\s*the\s*production|marketing\s*the\s*production|market\s*the\s*product|non(?:\s|.)?produc(?:ing|tion))
Mineral/surface rights and easements (oil and gas)	For ‘Surface/Mineral Rights’ - minerals rights, surface rights, subsurface rights, surface rights, sub-surface rights, mineral use, subsurface use, surface use, surface use restrictions. For ‘Easements’ - right-of-way, easements of way, easements of support easements of light and air.	minerals?\s*rights?|mineral\s*uses?|surface\s*?rights?|usage\s*restrictions?|sub.?surface\s*rights|sub.?surface\s*use|surface\s*use\s*restrictions?|surface\s*use|right.?of.?way|easements?\s*of\s*way|easements?\s*of\s*support|easements?\s*of\s*light\s*and\s*air
Risk of loss -buyer	References to risk of loss for buyer	deliver(y|ies).{0,200}risk of loss|risk of loss.{0,200}deliver(y|ies)|risk of loss.{0,200}buyers?|buyers?.{0,200}risk of loss|titles?.{0,200}risk of loss|risk of loss.{0,200}titles?| transfers?.{0,200}risk of loss|risk of loss.{0,200}transfers?| transfers?.{0,200}distributors?|risk of loss.{0,200}distributors?
Risk of loss - seller	References to risk of loss for seller	inventor(y|ies).{0,200}risk of loss|risk of loss.{0,200}inventor(y|ies)|risk of loss.{0,200}sellers?|sellers?.{0,200}risk of loss
Security deposit	References to security deposit	securit(?:y|ies)\s*deposits?|letters?\s*(?:of\s*)?credits?(.*)(\R)
Square footage	References to square footage	\d+\s+([Ss]q\.?\s*[Ff]t\.?|([Ss]quare\s+[Ff](ootage|eet)))
Termination	termination date, termination dates, termination notice, termination notices, termination rights, termination right, right to terminate, rights to terminate, right of termination, rights of termination, right for termination, rights for termination, notice to terminate, notice of termination, notice for termination, term and termination, terms and termination, date of termination, date to terminate, notice of termination	termination\s*(?:dates?|rights?|notices?)|rights?\s*(?:to|of|for)\s*terminat(?:e|ion)|(?:dates?|terms?|notices?)\s*(?:to|of|for|and)\s*terminat(?:e|ion)
Unitization and pooling (oil and gas)	joint leases, unitization, unit, uniting, communitize, communitized, communitization, production sharing, combining adjoining leased tracts, combining leased tracts, pooling, pooling units, pooled units, pooling order, pools unit.	pool(?:s|ed|ing)?\s*unit(?:s|ed|ing)?|pool(?:ed|ing)?\s*orders?|joint\s*leases|unitiz(?:ed?|ation)|communit(?:ing|ized?|ization)?|production\s*sharing|combine?(?:ing)?\s*leased?\s*tracts?|combine?(?:ing)?\s*adjoining\s*leased?\s*tracts?
Unitization and pooling type (oil and gas)	voluntary pooled units, compulsory units, statutory units, forced pooled units, drilling units, proration units, field wide units, field wide recovery, field wide recovery units, enhanced recovery units, specially defined units, recovery units, enhanced recovery unit, enhanced unit.	voluntary\s*pooling|voluntary\s*pooling\s*units?|forced\s*pooled\s*units?|compulsory\s*units|statutory\s*units|drill(?:ed|ing)?\s*units?|proration\s*units\s*|field.?wide\s*recovery\s*(?:units?)?|field.?wide\s*(?:units?)?|enhanced\s*recovery\s*units?|specially\s*defined\s*units?|recovery\s*units?|enhanced\s*units?

Preview regular expression results

Regular Expression Preview is a way to quickly assess how a regular expression you've created in the viewer will perform on other documents beyond the one you’re currently viewing.

For example, let's say your regular expression is doing really well at finding Governing Law on the document you're viewing, but it fails to find this data in many other documents. Ideally, you would want to know this up front when editing your regular expression so that you can make adjustments to return more matches across more documents.

Run preview

To preview regex results:

1. When creating or editing a regular expression in the search bar, click Save.
2. To the right of the options for your regular expression, click Preview Results On Other Documents.
3. Select a saved search. Contracts will run the regular expression on the first 1000 documents.
   You can change this amount by going to the Instance Settings tab, filtering for the RegexResultsDocLimit instance setting, and changing the 1000 value to a different number.

View the results of your preview. Summary stats appear at the top of your list. The list will show all results across the saved search sample and group them by document. It also shows information about the section heading and type in which each result was found. Click a control number to open up that document in a new tab.

You can click the number button to toggle between documents with hits and documents with no hits summary stats. You can export the list to excel by clicking Export.

Close the preview when you are done.

Preview regular expression segmentation

Segmentation Preview is a way to quickly assess how a regular expression you've created in the viewer will segment the document you are on. You can cycle through documents in your queue to preview segmentation just as you would if you were in the main review interface.

For example, let's say you have a regular expression that you think is good at segmenting documents with a particular section heading structure. You can quickly test that theory by previewing segmentation instead of having to create the regular expression, model, profile, and analysis set to run analysis and assess results.

Click the preview segmentation button to demo how your regular expression will segment the document without leaving the viewer.

Run segmentation preview

To preview regex segmentation:

1. When creating or editing a regular expression in the search bar, expand the Regular Expression Details panel.
2. Click Preview Segmentation.
3. In the pop-up, observe the sections in the left pane and click them to navigate the contract preview. Change your parsing flag and see how the results update in real time.
   For more information on parsing flags, see Understanding parsing flags.
   
4. If you are happy with the results, segment the document by clicking Analyze. This will create new sections based on your preview and will not automatically delete any existing sections generated for the parent document.

Segment documents using regular expressions

You can segment documents into sections using regular expressions. See Segment documents using regular expressions for more details.