HipPaint has many shortcut keys to ease use and speed work-flow.
B: Brush
T: Text
L: Line
P: Polygon/Shape tools
K: Paint Bucket
I: Eye Dropper
S: Spray Can
M: Marquee
Scroll Wheel: Select tool
Wheel Button: Open tool settings diaglog (if applicable)
Directional Pad (D-Pad): Move cursor
SpaceBar: Start/Stop drawing
Return: Open the "Color Settings..." dialog
D: Revert to default colors (FG=Black BG=White)
X or Back Button: Swap foreground and background colors
Number Keys (1-9): Zoom In (1x-9x)
Number Key 0: Zoom Off (Hold to Zoom Out)
@: Toggle cursor speed (1x, 3x, 5x, Single Pixel)
Menu Button + D-Pad: Scroll Images
Menu Button + N: New Image
Menu Button + L: Load
Menu Button + S: Save
Menu Button + Q: Quit
Menu Button + Z: or . Undo
Menu Button + Y: or , Redo
Menu Button + H: History
Menu Button + X: Cut
Menu Button + C: Copy
Menu Button + V: Paste
Menu Button + A: Select All
DEL: Clear