| IO | Parameter | Type | Description
|
| in | thePolySplitAction | integer | A polyline split constant
|
| in | theSourceVerticesX | array of real |
|
| in | theSourceVerticesY | array of real |
|
| out | theResultPolysX | array of array of real |
|
| out | theResultPolysY | array of array of real |
|
| out | function result | OSErr | Error result code, also see Error handling
|