boolenqueue_and_echo_command(constchar*cmd,boolsay_ok=false);//put a single ASCII command at the end of the current buffer or return false when it is full
voidenqueue_and_echo_command_now(constchar*cmd);// enqueue now, only return when the command has been enqueued
voidenqueue_and_echo_commands_P(constchar*cmd);//put one or many ASCII commands at the end of the current buffer, read from flash