# about -- search the documentation

## Synopsis

• Usage:
• Inputs:
• s, , , , or a type,
• Optional inputs:
• Body => , default value false, whether also to search the bodies of the documentation nodes. By default, just their keys are searched.
• Outputs:
• , a list of documentation node keys matching the regular expression in the string s, if s is a string. Otherwise the search matches against the name of s as a complete word.

## Description

The documentation corresponding to the keys in the list returned can be displayed by applying the function help to it. To see the documentation corresponding to just one or some of the keys, give help an integer or a list of integers to be used as indices in the list returned by the most recent application of about. The function viewHelp can also be given an integer for viewing the documentation.

The packages searched are the loaded packages and the packages installed under one of the prefixes listed in prefixPath. The first search will take a few seconds while it reads all the documentation keys into memory.

 about resolution help 5

## Caveat

Since s is taken as a regular expression, parentheses serve for grouping subexpressions, rather than matching themselves.