# Curve direction arrows in markups not saved in .mrk.json?

**URL:** <https://discourse.slicer.org/t/curve-direction-arrows-in-markups-not-saved-in-mrk-json/48278>\
**Category:** Development\
**Created:** [September 24, 2026, 6:40pm UTC](https://discourse.slicer.org/t/curve-direction-arrows-in-markups-not-saved-in-mrk-json/48278 "2026-09-24T18:40:15Z")\
**Posts on this page:** 2\
**Page:** 1

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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 24, 2026, 6:40pm UTC](https://discourse.slicer.org/t/curve-direction-arrows-in-markups-not-saved-in-mrk-json/48278/1 "2026-09-24T18:40:15Z")

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It looks like turning on/off direction arrows in curves is not saved to the .mrk.json file. Is this by design? Seems like it would be useful… I’ve added some code to .slicerrc.py to turn on arrows by default, but is there a reason it’s not saved/restored in the .mrk.json file?

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<div class="post-metadata">

**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 24, 2026, 6:59pm UTC](https://discourse.slicer.org/t/curve-direction-arrows-in-markups-not-saved-in-mrk-json/48278/2 "2026-09-24T18:59:47Z")

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OK, clarification here - direction arrows _are_ saved in the .mrml file.