'Should the specified command appear in the help table?
This method only checks whether a specified command should
appear in the table of topics/commands.  The command can be
used by the caller (see the \'check_show_help\' method) and
the command will still be available, for instance, if a
character type \'help name of the command\'.  However, if
you return False, the specified command will not appear in
the table.  This is sometimes useful to "hide" commands in
the table, but still access them through the help system.
Args:
cmd: the command to be tested.
caller: the caller of the help system.
Return:
True: the command should appear in the table.
False: the command shouldn\'t appear in the table.'

def should_list_cmd(self, cmd, caller):

    return True
