Type 'what program' to get the revision code. You can't 'find revisioncode', you must use 'what program'. No. 'which command' will find 'command'. Let me write that. Don't forget the options.
Every system has 'more'.
Understand that since 'help' is such a small program, it is better not to 'nice help'. Unless of course 'now' is a file name. I didn't know you needed help with 'pc'.