future version will handle screens up to 273 lines for full full full screen and also tiny screens low to 16 lines (for logos, title, ...)
I'm currently working on an editor. When all settings are done, the screen may be locked to run bitmap editor then...
each time the cursor is changing line, the screen palette (at the upper-right of the screen) is updated
the sprite palette is active when there is at least one HSP on the line
the green cursor outside HSP (represented by blue squares) has obviously mode 0 size