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+Copyright The Numerical Algorithms Group Limited 1992-94. All rights reserved.
+Copyright (C) 2007-2009, Gabriel Dos Reis. All rights reserved.
+ 
+OpenAxiom Help Information.
+Section numbers refer to the on-line version of the book 
+AXIOM: The Scientific Computation System by Richard D. Jenks and Robert S. Sutor
+ 
+==============================================================================
+A.28.  )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.
+  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: 
+o )display
+o )set
+o )show
+ 
+