Class:                  sysiclass
Superclass:             imageclass
Include File:           <intuition/imageclass.h>

This is a class of system images and standard application images.  As of
Intuition version 37, there are 11 possible sysiclass image glyphs to
choose from:

    DEPTHIMAGE   Window depth arrangement image.
    ZOOMIMAGE    Window Zoom image.
    SIZEIMAGE    Window Sizing image.
    CLOSEIMAGE   Window close image.
    SDEPTHIMAGE  Screen depth arrangement image.
    LEFTIMAGE    Left arrow image.
    RIGHTIMAGE   Right arrow image.
    UPIMAGE      Up arrow image.
    DOWNIMAGE    Down arrow image.
    CHECKIMAGE   Checkmark image.
    MXIMAGE      Radio button image.

The class caches the image's bitmap to improve rendering speed.

New Methods:
------------
None.

Changed Methods:
----------------
None.


Attributes:
-----------
 sysia_drawinfo (i)    sysia_which (i)    sysia_size (i)