Boot the disk from the Loader menu on a +3.

The editor is a rather simplistic piece of work. Just enough to get the job done.

Q,A,O,P move the cursor around.
1-7 set the block height for a block at the cursor location.
S toggles the solidity of the block. Or rather, whether a block is, say, 
a solid 5 block high column or just a single block at a height of 5.
Space clears the block at the cursor.
0 sets an energy object.
H sets a bomb.
T sets a time bonus object.
X exits the editor.

To make a block pushable, move the cursor over the block and then press 
B followed by P. I was going to add more block features at one point so 
I'd end up running out of single keypresses for features eventually...

The game engine has a few limitations as it stands. You can't have a 
collectible object under/on top of a block. Nor can you push a block 
into the same location where one exists - even if it would move under 
it.

When testing the game, X exits to the title screen, from where CAPS+E exits the game.
