# Typing custom coordinates to edit a fiducial

**URL:** <https://discourse.slicer.org/t/typing-custom-coordinates-to-edit-a-fiducial/18442>\
**Category:** Support\
**Created:** [June 30, 2021, 8:26pm UTC](https://discourse.slicer.org/t/typing-custom-coordinates-to-edit-a-fiducial/18442 "2021-06-30T20:26:21Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Rahulsabharwal](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rahulsabharwal/32/9035_2.png) [@Rahulsabharwal](https://discourse.slicer.org/u/Rahulsabharwal)\
**Post date:** [June 30, 2021, 8:26pm UTC](https://discourse.slicer.org/t/typing-custom-coordinates-to-edit-a-fiducial/18442/1 "2021-06-30T20:26:22Z")

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Can we type custom r,a,s coordinates and edit a placed fiducial markup ?

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**Author:** ![Juicy](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@Juicy](https://discourse.slicer.org/u/Juicy)\
**Post date:** [July 1, 2021, 8:39pm UTC](https://discourse.slicer.org/t/typing-custom-coordinates-to-edit-a-fiducial/18442/2 "2021-07-01T20:39:08Z")

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Yes this can be done in the markups module. Expand the control points drop down from memory.

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**Author:** ![Rahulsabharwal](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rahulsabharwal/32/9035_2.png) [@Rahulsabharwal](https://discourse.slicer.org/u/Rahulsabharwal)\
**Post date:** [February 2, 2023, 3:11pm UTC](https://discourse.slicer.org/t/typing-custom-coordinates-to-edit-a-fiducial/18442/3 "2023-02-02T15:11:15Z")

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I can see the r,a,s coordinates in the drop down . But how can I edit them ? For eg . I have placed a point F1 at (4,5,6). How can I place this point exactly at (0,0,0). ?

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [February 2, 2023, 7:22pm UTC](https://discourse.slicer.org/t/typing-custom-coordinates-to-edit-a-fiducial/18442/4 "2023-02-02T19:22:12Z")

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In the Markups module, double left-click to edit the values.

This is not Slicer defined behavior, but how the Qt GUI framework handles editable/selectable cells in a table.