  Editor for V-Sprite Format files
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Invoke with filename as a parameter. If file does not exist, it will be created.

Keys:
 arrows            Move the cursor (solid yellow half-frame)
 [Home],[End]      Horizontal cursor movement
 [PgUp],[PgDown]   Vertical cursor movement
 same with [Alt]   Center (dotted yellow half-frame) movement
 [Shift]+arrows    Move the color selector
 [Ctrl]+arrows     Resize image
 [Space]           Paint on image
 [Tab]             Set transparent color
 [H],[V]           Flip image horizontally or vertically
 [Esc]             Exit
