Tip: use name function instead of cmd shell move

[mnrvovrfc]

This is for historical reasons. On Unix, and on MS-DOS beginning in v2, a directory is actually a file which only has information about other files. Therefore "renaming" a file inside a directory a child of the "root", to the computer is like changing a word in a text file. The "root" directory, however, was handled quite differently at least in MS-DOS; it had a limited number of entries stored directly into the FAT or something like that.

It would have been irritating if M$ came up with "NAME" for QuickBASIC/BASIC PDS and it wasn't possible to move a file from one child directory to another, and instead had to copy to destination, verify destination and then delete source. Programmers would have insisted on the quirk which really isn't.