# How to display the vtkMRMLAnnotationLineNode in front of all model node

**URL:** <https://discourse.slicer.org/t/how-to-display-the-vtkmrmlannotationlinenode-in-front-of-all-model-node/15220>\
**Category:** Development\
**Created:** [December 25, 2020, 3:38am UTC](https://discourse.slicer.org/t/how-to-display-the-vtkmrmlannotationlinenode-in-front-of-all-model-node/15220 "2020-12-25T03:38:20Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![MurphyJOE](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/murphyjoe/32/9329_2.png) [@MurphyJOE](https://discourse.slicer.org/u/MurphyJOE)\
**Post date:** [December 25, 2020, 3:38am UTC](https://discourse.slicer.org/t/how-to-display-the-vtkmrmlannotationlinenode-in-front-of-all-model-node/15220/1 "2020-12-25T03:38:21Z")

</div>

Hello, deverlopers:

I have load several STL files into scene as model node, and create a new mrml annotation line behind the model node.  
But, I wanna to display the annotation node always in front of all model nodes, no matter where annotation node locates.

How could I make it?

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [December 25, 2020, 9:00pm UTC](https://discourse.slicer.org/t/how-to-display-the-vtkmrmlannotationlinenode-in-front-of-all-model-node/15220/2 "2020-12-25T21:00:20Z")

</div>

This feature has been added to Markups module in recent Slicer Preview Release.

In Markups module’s advanced visualization section you can choose to show occluded parts of markups (lines, curves, etc). You can choose to make occluded part appear semi-transparent, this way you don’t break the 3D rendering: you preserve depth cues, but you can also see and pick markups in all viewing angles.