yes and no you can use multiple sprite, you just add 8 I think to pic 1 to get the other one so like

[01010101]->gdb
[ffffffffffffffff]->pic1
[1234567890123456]

to display the second one after pic 1
you have
{B*4+A+pic1+8}

I think, that might work, but i'm not sure, I know you can use different sprites all in pic 1, for example to display a big character, but I'm not exactly sure, so you can!

I can't help much more, sorry, good luck

well the 0C is just a dead zone, and what he did was he stored the parts of the pics as letters and numbers, (i think), so when it was all displayed it just what to what ever pic had that letter or number. Sorry but I didn't really understand that tutorial and I'm only going off of what aeTIos taught me like one day ago.

edit: i think he just did that so you could understand where each part of the hex's were on the map

no the gdb is like the map

like if you had this:
[01010101]->gdb1
[01000001]
[01000001]
[01010101]

and your pic was an X for example

your display would be like this:

X X X X
X      X
X      X
X X X X

or a box

kinda,

01 represents a sprite that is 8x8
so in that code if you had

[01010101]->gdb1
[FFFFFFFFFFFFFFFF]->pic1
for(b,0,3)
for(a,o,3)  //look at the 3's, notice i'm trying to display 4 boxs right nest to each other
{b*4+a+gdb1}->T  //so the four is put with b because there are going to be 4 boxes from left             to right, and then a is how many rows down the calc reads, so as set before it is 3 but with 0 it is really 4, keep in mind we only have one row so the a is irrelevant

and then the rest of the code is irrelevant to your question

integrating music into the classroom?! Wow I wish I had that in elementary school! Music is my life but only because my dad is a band teacher! I'll start thinking of some names

I think so, But yeah it's easier as just pics, and you refer to it later as the pic

Dangit! I was looking forward to see how this comes!