ener.hlp (Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
File already exists (ERR: 58)
■ The file name specified in a NAME statement is identical to
  a file name already in use on the disk.
 
■ Possible solutions:
 
  • Rename the file.
 
  • Specify a different file.
 
  • Delete the duplicate file.
 
■ If you need additional help, move the cursor to a keyword
  and press F1 to open the Help window.