The general question is where in the documentation I could learn what's possible and how it's done ... and options that are user configurable.
The specifics include these:
a) It looks like your arrows with text at one end force the textbox to have the arrow connector at one corner. Is that the case ... or can one (a la visio) make the anchor be the midpoint of one side of the rectangle? ... If this is possible, how? ... If one just wants the box to use a different corner, how is that accomplished?
b) Can one hang an oval object off the arrow with text inside?
Thanks. (a) above is very important, (b) barely registers, but I'm trying to get oriented quickly, so I won't have to bother you (as much.) [Seriously, I'm usually very independent, but it's clear you're extremely supportive; I promise I'll try not to "take advantage."]