Create a new program other than the current program.
Load a program from a disk drive.
Append the text at the end of the current program.
Close the current (i.e. top-front) program.
Save to renew the current record.
Save as a new program.
Print the current program
When the dialog is closed without clicking Ok, the printer setting shall be changed.
File menu can be launched with pressing Alt-F
Program files are saved as plain texts.
File names containing "NoName" are not allowed.