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A.28.  ``)what``
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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.
  
  commands  
    displays a list of  system commands available  at your
    user-level. Your user-level is set via the )set userlevel command. To get
    a description of a particular command, such as ``)what``, issue )help
    what.
  
  domains   
    displays a list of domain constructors.
  
  operations 
    displays a list of operations in  the system library.
    
    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.
  
  synonym  
    lists system command synonyms.
  
  things    
    displays all  of the  above types for  items containing
    the pattern strings as substrings. The command synonym )apropos is
    equivalent to )what things.
 
Also See: 

* )display
* )set
* )show