For the life of me I can not understand what is so complicated about this.
HEADING = that's the bit you read at the top of your HSI or some similar device. When told to fly a certain heading, whether by ATC or some written instruction, you manipulate control surfaces on the aircraft until said heading appears at the 12:00 position of your heading indicator.....HSI, RMI, Compass, Ouija Board, whatever.
Track = a heading that acounts for external forces i.e.wind, in order to maintain a specific track across the face of the planet.
Let me ask a question. If some of you are receiving radar vectors and are told to "turn right to 240" do you have 240 as an indicated heading or are you doing mental gymnastics or consulting your FMS in order to find a heading that will give you a TRACK of 240? Hopefully you are turning to a HEADING of 240. It's the same thing with maintain runway heading. How about if you are decending into the terminal area and told "maintain present heading". As you descend it's a fair bet that the winds are going to change somewhat. Do you maintain the heading that you had when you were given that instuction from ATC or do you continually maneuver the aircraft to maintain a track? Again, hopefully you are still on the same heading. It's the same thing as "maintain runway heading".
I might mention that my significant other is one of those folks on the other side of the mike.......you know one of those that might say something like "maintain present heading" and she agrees with my view.