The tcls command suspends the process on the specified port, pushes a level on that port, then executes the TCL command. This is different from the tcl command in that tcls suppresses the messages generated by the command that was executed on the remote port.
tcls port.number user-ID tcl.commands
Executes the count md command on port 33, provided that the current user-ID is dm. If the current user-ID is not specified, or is invalid, the command does not take place. The results of the count command display on port 33, but not on the port originating the tcls command.
tcls 33 dm count md