# Erase using a segment as only editable area

**URL:** <https://discourse.slicer.org/t/erase-using-a-segment-as-only-editable-area/20519>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [November 7, 2021, 5:35pm UTC](https://discourse.slicer.org/t/erase-using-a-segment-as-only-editable-area/20519 "2021-11-07T17:35:46Z")\
**Posts on this page:** 1\
**Showing post:** 13

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**Author:** ![hherhold](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/hherhold/32/12199_2.png) [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Post date:** [September 12, 2022, 12:24pm UTC](https://discourse.slicer.org/t/erase-using-a-segment-as-only-editable-area/20519/13 "2022-09-12T12:24:45Z")

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Sorry for the slow reply.

I think my confusion was the inconsistency in behavior between scissors and erase. In scissors, there is an “Apply to all segments” checkbox, which is actually “apply to all visible segments”. I thought (incorrectly) that the “Erase all segments” checkbox would behave similarly, but it does exactly what it says it does - erase all segments, visible or not. The tooltips for both checkboxes (which I had turned off, unfortunately) do document the appropriate behavior correctly.

Erase all segments _does_ work correctly with Editable area set appropriately, I do not see any issue with that.

So I guess this is a case of “nothing to see here, move along…”

Thanks!

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_[View the full topic](https://discourse.slicer.org/t/erase-using-a-segment-as-only-editable-area/20519)._