Scratch

Which block are you describing in the list you made?

its an array, right?  trying to remember what arrays were particularly useful for.  Like maybe if you had a sprite which was made of diferent parts and you would store the position of each part in a different box in the array?

Values can be numbers or text stored in the "slots" of the list, just like a variable can store in its single "slot".  In OrbitTracker, I  made two lists to store the X and Y position of a tracer sprite;
The sprite goes to the X,Y position stored in the lists and stamps a black costume, then goes to a "planet", stamps a costume with color, and stores that position in the lists.  The effect is to make a trail by erasing (stamping over) the old mark, then making a new mark - the length of the list determines how long the trail is.

I think its just like several variables stuck together, but you usually would use them for variables which are related to each other.