1GENERAL: macro - a file containing commands for the program

Usage: <macro> {<parameter>}

Macros are files containing commands for the program. A macro is called
by its name <macro>. Macros in the current macro search path can be called
without giving a path; otherwise the path has to be specified.

Command line parameters may be passed into a macro. Within the macro, 
they are available as local variables, by default called "p1", "p2",... 
The local variable "nparam" gives the number of command line parameters. 

Macros can be called from within other macros.

On-line help information may be included into a macro as lines that start
with two comment signs "##". Such lines are copied to standard output when
one requests help about a macro with the command "help <macro>".

See also: command, parameter, path, subroutine, type, var, variable