| IO | Parameter | Type | Description
|
| in | theDoCheckFlag | integer | A boolean constant
|
| out | theVarPolyPx | array of real |
|
| out | theVarPolyPy | array of real |
|
| out | thePolyChangedFlag | integer | A boolean constant
|
| out | thePolyCheckResult | integer | A polyline check constant
|
| out | function result | OSErr | Error result code, also see Error handling
|