Eased back into Editor mode with a few minor tweaks and bug fixes. First off was a small bug in the control routine, which made the Editor think that Shift was being held constantly. I then tweaked the tile cursor routine, so that when + and - are used to select a tile, the tile window scrolls accordingly.
Rounded off the night's session by tweaking the Mouse Wheel functionality; previously, the Wheel button was used to grab the tile under the cursor in Pen Mode. I tweaked the code to ensure this function was available in all drawing modes, and also as a way of jumping quickly out of Brush Mode back into Pen Mode.
