| Bit | Wimp | Meaning | |
|---|---|---|---|
| 0 | Old | Has title bar | |
| 1 | Window is moveable | ||
| 2 | Old | Window has vertical scroll bar | |
| 3 | Old | Window has horizontal scroll bar | |
| 4 | Window can be redrawn entirely by the Wimp | ||
| 5 | Window is a pane | ||
| 6 | Window can be opened (or dragged) outside screen | ||
| 7 | Old | Has no close and back icons | |
| 8 | Return Scroll_Request event (with auto-repeat) | ||
| 9 | Return Scroll_Request event (without auto-repeat) | ||
| 10 | Window colours as GCOL numbers 0 – 254 | ||
| 11 | Window belongs to background window stacks | ||
| 12 | Detect keypresses | ||
| 13 | 3.10 | Force window to stay on screen | |
| 14 | 3.10 | Ignore right-extent adjust size icon | |
| 15 | 3.10 | Ignore bottom-extent when dragging adjust size icon | |
| 16 | Window is open | ||
| 17 | Window is fully visible | ||
| 18 | Window has been toggled to full size | ||
| 19 | Open_Window_Request caused by toggle size icon | ||
| 20 | Window has input focus | ||
| 21 | 3.10 | Force window to screen on next Wimp_OpenWindow | |
| 22 | Toggle method | ||
| 23 | 3.98 | Furniture window (if child) | |
| 4.00 | Foreground window stack | ||
| 24 | Window has back icon | ||
| 25 | Window has close icon | ||
| 26 | Window has title bar | ||
| 27 | Window has toggle size icon | ||
| 28 | Window has vertical scroll bar | ||
| 29 | Window has adjust size icon | ||
| 30 | Window has Horizontal scroll bar | ||
| 31 | 1 for using new format, 0 for old |