In a score I'm transposing I've noticed several notes have individual dots either atop or below them. But NWC doesn't have a corresponding symbol that I can see. Might this be the same as a staccato or accent perhaps?
That would be how I'd interpret it. Dot = staccato
Let me guess, the reason for the question is that the dots are outside the staff instead of being close to the note? This is very typical of jazz scores where most articulations are outside the staff. You can achieve this with the marker object <@> - the vertical position of the object will affect the articulation (or slur or triplet) position.