# Why are some points on a fit spline white, some black?

**URL:** <https://discourse.shapr3d.com/t/why-are-some-points-on-a-fit-spline-white-some-black/7011>\
**Category:** Modeling Questions\
**Created:** [March 28, 2020, 10:02pm UTC](https://discourse.shapr3d.com/t/why-are-some-points-on-a-fit-spline-white-some-black/7011 "2020-03-28T22:02:21Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![RonJeffries](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/ronjeffries/32/5708_2.png) [@RonJeffries](https://discourse.shapr3d.com/u/RonJeffries)\
**Post date:** [March 28, 2020, 10:02pm UTC](https://discourse.shapr3d.com/t/why-are-some-points-on-a-fit-spline-white-some-black/7011/1 "2020-03-28T22:02:21Z")

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i seem not to be able to move the white ones. how did they get that way? how can i make them able to move?

can’t i add a pic here?

thanks!

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**Author:** ![Gelphyn](https://avatars.discourse-cdn.com/v4/letter/g/db5fbb/32.png) [@Gelphyn](https://discourse.shapr3d.com/u/Gelphyn)\
**Post date:** [March 28, 2020, 10:48pm UTC](https://discourse.shapr3d.com/t/why-are-some-points-on-a-fit-spline-white-some-black/7011/2 "2020-03-28T22:48:54Z")

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@RonJeffries  
The White are moveable Control, or Fit Points depending on the Spline type chosen.  
The Black are Locked Points.

Click on any Point to Lock/Unlock, just Tap the Lock Icon and it will reverse the current setting:

 ![IMG_1608](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/d/d6d6b355668c4490b4dd0e925c6c2317a9d75bd2.jpeg) ![IMG_1609](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/1/18ee054b6372cad085662e4deeb89438eade37de.jpeg)

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<div class="post-metadata">

**Author:** ![RonJeffries](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/ronjeffries/32/5708_2.png) [@RonJeffries](https://discourse.shapr3d.com/u/RonJeffries)\
**Post date:** [March 28, 2020, 11:21pm UTC](https://discourse.shapr3d.com/t/why-are-some-points-on-a-fit-spline-white-some-black/7011/3 "2020-03-28T23:21:48Z")

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how did they get locked?

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<div class="post-metadata">

**Author:** ![Gelphyn](https://avatars.discourse-cdn.com/v4/letter/g/db5fbb/32.png) [@Gelphyn](https://discourse.shapr3d.com/u/Gelphyn)\
**Post date:** [March 28, 2020, 11:32pm UTC](https://discourse.shapr3d.com/t/why-are-some-points-on-a-fit-spline-white-some-black/7011/4 "2020-03-28T23:32:02Z")

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@RonJeffries  
Locking works in the manner explained.  
If it happens regularly collect as much detail as possible and submit it as a Bug to the S3D Team.