Originally Posted by
Superman
You can save the whole .CONTROL file as another name using the icon that shows multiple floppies ( "Save as" ) ( on the top toolbar ), the single floppy is a "Save" icon.
There is no way to edit only the .DEFAULTS file(s), other than
1) thru the Op manager --> "Files" area ( they open in their own mini op manager )
or by
2) opening the file directly with Mastercam ( you could rename .DEFAULT to .MCX-5 --- open the file like a normal session, do your edits, save & rename back to .DEFAULT ),
3) It may be possible to double-click that filetype & associate it to the MastercamX executable (.EXE) file
IMO, going thru the op manager [ option 1) ] allows you greater choice of options. [ or if it works, option 3) ]
option 2) method is a long winded way to achieve what you need.