More machine-assisted level design progress

A couple days ago I had started the "fix the glaring tiling errors" phase for the ninth level of my Markeen-assisted level pack. Markeen had produced a neat centerpiece for the level, but I wasn't sure about the route I was going to have the player take through it. Today I punched a small number of holes in the generated structure to create a path for the player that makes me think of convection. The player goes down one side and cannot return up that way, so they must instead return via a door whose path they should clear earlier. I got on a roll and made the level playable, fixed the distribution of point items, and did the background. All that's left to do for this one is decorate.