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CAD tip # 13150:
Question
If you want to hatch selected boundaries "en mass" (selecting them by All, Window, etc.), regardless of any nested areas or boundary overlaps, select the "Ignore Island Detection" option in the Options pop-up panel (or in the Hatch dialog) when hatching (or the older "No Island Detection", HPISLANDDETECTIONMODE and HPISLANDDETECTION) and "Create separate hatches" (HPSEPARATE):
The "Create separate hatches" option will not show up in the preview and will create separate hatch objects for each area (in the overlapped area, the hatchure will be twice). Thus, you cannot create one common hatchure fully covering overlapping objects (without skipping their intersection). You can achieve this by using the internal pick point (not the object) selection method - this method creates its own auxiliary "outline" hatch boundary.
*CAD
