Dash equals minor, yes. The dash is part of the jazz shorthand.

If you set BiaB to the Jazz fonts, you will see that instead.

C-7 or Cm7, same chord.

Little triangle after the chord for Maj7, little circle for Diminished, circle with slash for Half-Diminished or m7b5, which can also be shorthand typed in BiaB as Ch, etc.

These are typical shorthands on jazz charts.


--Mac