file query/set
f [filename]
This command allows you to query or set your current filename which is used by default in the Edit (e), Read (r), Write (w) and Execute (x) commands.
When a filename is not specified, this command displays your current filename on the command line and waits for you to clear it by typing the carriage return key.
If a filename is specified, the command sets the current filename to be the filename specified.
The File command must be the last command on a line.
Not affected.
Not affected.