Click here for a generator that has slash chords. If my memory is correct I think it is the only one I've found that shows slash chords.
Slash chords are just chords with a bass note added after the slash. For example:
Em7/F# is not listed on that generator, however, call up the Em7 chord and then look around your fretboard for the F# note on a bass string -- like the 6th string 2nd fret --add it to the other notes and you have the Em7/F# chord.
Dsus4/F# is not shown but call up the Dsus4 and then look around your fretboard for a bass F# note. Going to have to mute the 5th string to pull this one off.
The other chords are listed on that generator.
The answers you got on the other forum are good and go into a lot of detail, however, I don't think anyone gave you the address to
a generator. You might want to bookmark this generator. Everyone needs a good chord/scale generator in their bag of tricks.