If the user proc does not provide any command line arguments, the meta-comment Argument Usage, although mandatory, must be left empty. For example:
proc ::tclapp::mycompany::template::my_command2 {} {
# Summary : A one line summary of what this proc does
# Argument Usage:
# Return Value:
# TCL_OK is returned with result set to a string
# Categories: xilinxtclstore, template
…
}