I just wanted to mention that I was looking for a way to add gridlines with a coordinate system to a map today in MapINfo 16.0.
I found the solution in the article available in this community, you find it under Map -> Content -> Add to Map - Gridlines, but I just wanted to point out that in the MapInfo Help of MapInfo 16.0 still reference is made to the old location of this command, -( Map -> Options). This is confusing, so I would advise to update this in the MapInfo Help as well.
Many thanks,
E. Lievois