| IO | Parameter | Type | Description
|
| in | theCADArea | longint | Area ID
|
| out | theClipBoxFlag | integer | A boolean constant
|
| out | theClipBoxX1 | real |
|
| out | theClipBoxY1 | real |
|
| out | theClipBoxX2 | real |
|
| out | theClipBoxY2 | real |
|
| out | function result | OSErr | Error result code, also see Error handling
|