struct ciolib_pixels *getpixels(sx, sy, ex, ey)
Returns and allocated array of pixels suitable for use by setpixels()
Must be freed using freepixels()

freepixles(struct ciolib_pixels *)
Frees a struct ciolib_pixels returned by getpixels()

setpixels(sx, sy, ex, ey, x_off, y_off, pixels)
Draws the pixels on the screen. x/y_off are an offset in the pixel array

struct ciolib_screen *savescreen()
Saves the entire current screen state.

freescreen(a)
Frees a value returned by savescreen()

restorescreen(a)
Restores the entire screen state

This allows SyncTERM to not crap all over Sixel graphics.