HELP or (?) Command File -- Gets help on a command.
Parameters:
Command -- Name of a command. If left blank then a one line
per command list is typed to screen. If wildcards
(*) are included, only those commands matching the
name will be listed. e.g. help *e* will list
all commands with an `e' in them. If no wildcards
are used then a search is made for a file containing
further information.
File -- A hidden parameter. If included, the help information
is written to a file of this name if it can be opened.
Nothing is written to the standard output terminal
unless something goes wrong. The help returns
immediately. This is the best way to get hard copy
of the help files.
As a special case if you specify CLASS as a command you will get
a list of classes which can be used to select commands by loose
purpose/action. Some commands crop up in more than one class.
You can go straight to such a listing with HELP CLASS Classname
where, for example, Classname = 'Input' will list commands to do
with input.
This command belongs to the class: information