function
| Library: File system utilities (OMVFS legacy) Include: omvfs.xin | 
define external function vfsRename
       value	stream  location
     to  value    stream  newname
Argument definitions
Use this function to rename a file or subdirectory.
Location must:
Newname must
Renaming a file on the current directory
include "omvfs.xin" process . . . vfsRename "myfile.txt" to "myoldfile.txt"