HELP (Land or Sea)
The HELP command will display a brief explanation of the
purpose of a command and its syntax. In the syntax section,
keywords are represented in capital letters. If only a
portion of the keyword is required, only the required portion
will be in capital letters. The optional part of the keyword
will be in lower case and enclosed in brackets "[ ]".
Terms, values and other flexible input are described by a
lower case descriptor enclosed by "( )". A more detailed
description of acceptable responses will follow the syntax.
H[elp] [(topic)]
Where: (topic) = Any land or sea command, or any other help
topic as listed in the default help.