search-string
Locate functions, commands and help topics by keyword lookup.
EXAMPLE
-------

To look up all command and help topics whose one-line desciptions or
symbol names contain the string "trig", one would type:

 0>apropos trig
 
 Matching functions and commands in module: maths
  acos
    Trig arc cosine - returns radians
  asin
    Trig arc sine - returns radians
  atan
    Trig arc tangent - returns radians
  cos
    Trig cosine(x)
  sin
    Trig sine(x)
  tan
    Trig tangent(x)
 0>

ARGUMENT
--------
search-string  -  The string to search for. Case is not significant.

CONTEXT
-------
The apropos command provides one way of finding commands and help
topics related to a given subject. It is not a perfect method, since
it depends upon how each entry is documented, but it is a first line
of attack to try.

The apropos command works by performing a case-insensitive search for
the string that you specify. It searches for the string in the
one-line help associated with each command and help topic, as well as
the each command and topic name. Any commands and topics for which
this search succeeds are displayed along with the name of the module
in which they were found.

RELATED COMMANDS
----------------
help    -  Show documentation on a command, function or help topic.
varlist -  List variables and their characteristics.