other_shell

      command: <string>

 This command allows you to 'shell-out' and execute another command. This is
 done by invoking COMMAND.COM or other command processor in DOS or CMD.EXE in
 OS/2 and so there must be enough memory for it and the environment variable
 COMSPEC should be set to reflect the position of COMMAND.COM or CMD.EXE.

 If the editor is invoked with the -r option it is running in 'restricted'
 mode and any attempts to shell-out with this or block_filter will fail.

 eg:  other_shell "dir/w"

 NOTE:

 On the UNIX and other environments the commands will vary, and indeed on
 some machines this function may not work at all.