ZOOM_SELECT = 0x10

select rectangle

ZOOM_SELECT_MOVE

only scroll

ZOOM_SELECT_LARGE

select a rectangle on the screen or zoom one step larger

ZOOM_SELECT_SMALL

select a rectangle on the screen or zoom one step smaller

ZOOM_SELECT_PLUS

select a rectangle on the screen or zoom 10 times larger than ZOOM_SELECT_LARGE.

ZOOM_SELECT_MINUS

select a rectangle on the screen or zoom 10 times smaller than ZOOM_SELECT_SMALL.

ZOOM_STEP = 0x20

select step

ZOOM_STEP_CUSTOM

set custom scale (not step)

ZOOM_STEP_LARGE

Cannot select a rectangle only step larger

ZOOM_STEP_SMALL

Cannot select a rectangle only step smaller

ZOOM_STEP_PLUS

Cannot select a rectangle only step 10 times smaller than ZOOM_SELECT_LARGE.

ZOOM_STEP_MINUS

Cannot select a rectangle only step 10 times smaller than ZOOM_SELECT_SMALL.