ALL: Undo shouldn't affect other buffers; need to understand how that even happens. Tweak the blend fade out. Understand the ImGui strange behavior insert a bad character near the top of the primitives demo before the macros, and the scene goes.
VIM:
(VK not specifically Zep): Key presses should direct back to Zep and active it
Auto Indent Pointer to errors outside the view Full screen mode Shadertoy compatibility entry point, add a header?