HPGAPTOL system variable

Hatch pattern gap tolerance

Specifies a tolerance to be used when entities are not completely closed when generating a boundary for BHATCH or BOUNDARY. The Tolerance setting from the Hatch and Gradient dialog is saved here. The default value is 0: the tolerance is set by the application, based on the current view size. When zoomed in closely, boundary detection will fail; when zooming out further so the contour 'looks' closed, the boundary will become detected. Values greater than 0 define the maximum gap in drawing units.