RENAME renames files from the command line or interactively, using
ambiguous filenames and CP/M-style or MS-DOS-style syntax.  Options
allow prompting before each file is renamed, renaming of system
files, and erasure of existing files without prompting.  RENAME now
renames R/W files about twice as fast and no longer erases existing
R/O files without asking unless R option is used.  Version 3.7 fixes
an obscure bug affecting Control mode.