WPD.exe, Version 1.00
Open a Word document with identical name and location
when doubeclicking a WordPerfect document

Usage:
  *  Register this program for WordPerfect files (*.wpd)
  *  Whenever you doubleclick a WordPerfect file, this
     program will search for a Word document with the
     same name and location, and open that Word
     document instead.
  *  If more than one matching Word file exists
     (e.g. *.doc as well as *.docx), a popup message
     will tell you to select the Word document directly.

Return code for this program is 0 if a single matching Word
document was found and opened, otherwise 1.

Written by Rob van der Woude
https://www.robvanderwoude.com