Federal Income Tax Research Sources 2020

Date Searching

Lexis

A date-limitation drop-down menu is available on the search screen.
Or, use the following commands:

date = 2004 or date is 2004
date > 31 December 2004 or date aft 31 december 2004
date < 1/1/1997 or date bef 01/01/2004

 

Westlaw

A date-limitation drop-down menu is available on the search screen.

Lexis & Westlaw Search Commands

LexisNexis Westlaw
Search terms as a phrase Contiguous words default as a phrase: work made for hire

Quotation marks:

"work made for hire"

Find any word in a document, either word must appear in the document

or

oil or petroleum

space (or use "or")

oil petroleum

Both words must appear in document

and

trust and charitable

and

trust and charitable

Word must appear at least x number of times in the document

atleast

atleast10(passive loss)

The search screen has a button for "term frequency"
Find two words in same document within a specified number of words of each other

/n or w/n

oil /2 petroleum

/n

oil /2 petroleum

First word must precede second within specified number of words

pre/n

united pre/3 america

+n

united +3 america

Find words in the same sentence

/s or w/s

circumstances /s mitigating

/s

circumstances /s mitigating

Find words in the same paragraph

/p or w/p

rule /p sanction

/p

rule /p sanction

Combining /n with /s or /p in the same search statement

Does not allow:

unnatural /3 accumulation /s snow

Allows:

unnatural /3 accumulation /s snow

Exclude the second search term

and not

trust and not charitable

% (or "but not")

trust % charitable

First word is not within specified number of words of second word

not/n or not w/n

puerto not/5 rico

First word is not in the same paragraph as the second word

not w/p

cable not w/p television

Words appear in the same document segment or field

w/seg (can be any segment)

opec w/seg gasoline

Add specific field or date restriction to search , i.e.

SY (opec and gasoline)

Word excluded from document segment or field in which other word appears

not w/seg

trust not w/seg charitable

Add specific field or date restriction to search , i.e.

SY(trust % charitable )

Word excluded from sentence in which other word appears

not w/s

trust not w/s charitable

First word must appear before second word in same sentence

+s

charitable +s trust

 

Search Language: Truncations, Plurals, etc.

LexisNexis Westlaw
universal character *

amist*d = amisatad, amisted, amistod, etc.

g**se = goose, geese, etc.

amist*d = amisatad, amisted, amistod, etc.

g**se = goose, geese, etc.

truncation ! regulat! = regulate, regulatory, regulations, etc. regulat! = regulate, regulatory, regulations, etc.
plurals

plural forms automatically searched; irregular plurals are not, i.e. lawyer, lawyers, but not goose, geese

plural forms automatically searched; irregular plurals are not,

i.e. lawyer, lawyers, but not goose, geese

hyphenated words hyphen read as a space, so hyphenated word seen as two words, i.e. pre-trial =pre-trial or pre trial, but not pretrial use hyphenated form to retrieve all variations of compound words: pre-trial = pre-trial, pre trial, pretrial
section symbol

use @ with or without a space

See Searching Symbols and Punctuation Marks

abbreviations, acronyms recognizes all variations of state abbreviations and many acronyms. You must type in I.R.S. or IRS.

use periods and no spaces to retrieve all variations, i.e.

i.r.s. =IRS, I.R.S., I R S, I. R. S.