echo Echo commands in M-files.
echo ON turns on echoing of commands inside Script-files.
echo OFF turns off echoing.
echo file ON where ‘file’ is a function name causes the
named Function-file to be echoed when it is used.
echo file OFF turns it off.
echo file toggles it.
echo ON ALL turns on the echoing of commands inside any
Function-files that are currently in memory (i.e., the
functions returned by INMEM).
echo OFF ALL turns them all off.

See also function, script.