Section16.28

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## 16.28 )what

ugSysCmdwhat

what

User Level Required: interpreter

Command Syntax:

)what categories pattern1 [pattern2 ...]
)what commands pattern1 [pattern2 ...]
)what domains pattern1 [pattern2 ...]
)what operations pattern1 [pattern2 ...]
)what packages pattern1 [pattern2 ...]
)what synonym pattern1 [pattern2 ...]
)what things pattern1 [pattern2 ...]
)apropos pattern1 [pattern2 ...]

Command Description:

This command is used to display lists of things in the system. The patterns are all strings and, if present, restrict the contents of the lists. Only those items that contain one or more of the strings as substrings are displayed. For example,

)what synonym

displays all command synonyms,

)what synonym ver

displays all command synonyms containing the substring ``ver'',

)what synonym ver pr

displays all command synonyms containing the substring ``ver'' or the substring ``pr''. Output similar to the following will be displayed

---------------- System Command Synonyms -----------------
user-defined synonyms satisfying patterns:
ver pr
)apr ........................... )what things
)apropos ....................... )what things
)prompt ........................ )set message prompt
)version ....................... )lisp *yearweek*

Several other things can be listed with the )what command:

categories
  displays a list of category constructors. what categories
commands
  displays a list of system commands available at your user-level. what commands Your user-level user-level is set via the )set userlevel command. set userlevel To get a description of a particular command, such as ``)what'', issue )help what.
domains
  displays a list of domain constructors. what domains
operations
  displays a list of operations in the system library. what operations It is recommended that you qualify this command with one or more patterns, as there are thousands of operations available. For example, say you are looking for functions that involve computation of eigenvalues. To find their names, try )what operations eig. A rather large list of operations is loaded into the workspace when this command is first issued. This list will be deleted when you clear the workspace via )clear all or )clear completely. It will be re-created if it is needed again.
packages
  displays a list of package constructors. what packages
synonym
  lists system command synonyms. what synonym
things
  displays all of the above types for items containing what things the pattern strings as substrings. The command synonym )apropos is equivalent to apropos )what things.

Also See: )display ugSysCmddisplay, )set ugSysCmdset, and )show ugSysCmdshow.

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