Syncing arrangement and MIDI editor horizontal zoom... (SOLVED)

Hi, all. I could have missed something more or less obvious, but well... As the title suggest it, is there a way to sync the horizontal zoom level of both arrange view and MIDI editor window, to keep them at the same zooming degree when modifying either one or the other ? The purpose is to be able to easily edit a MIDI item in comparison with an audio one. Didn't find anything close to this in the preferences or the actions list. Maybe an existing script ? Thanks for any hint...

Hi. Yes, like this; Hope this help!

This helps and works prefectly ! So, it was a 'View/Piano roll timebase' option. Should have looked more closely at these... Thanks ! :)