There is a word for these letters which won't come to mind just as there is for b d h l t etc . It's all to do with how the lower case letters extend , upwards or downwards i.e b and d hang upwards p and q hang downwards . As to a little clue , you should ask yourself "why?"
Ummmm... "f" doesn't look like it goes down to me, but hey, what do I know?
Quick other question... Sodemall, do you go round seeking out Macmilllan questions just to be a pain in the ass, or are you picking up all the answers so you can win? Seems to me this site doesn't need a one man police force, and certainly not a self appointed one!