As hard-drives grew in size (the average size is in TBs now), Windows Notepad became redundant. Yet, Microsoft never phased it out. Rather, it is still a part of the main Windows 10 package.
To adjust the WRK environment setting batch file: open console window; switch to the directory WRK was copied to; run Notepad WRKEnv.bat; make sure the "set path=..." statement contains the directory ...