Select in one click all the odd/even keyframes of the dope sheet.

Sometimes, you have to deal with more than 200 keyframes. And often, I need to delete one on two keyframes. I searched everywhere : there is no possibility to delete all the ODD keyframes or all the EVEN keyframes of your large Gr-Pencil dope sheet. It's a feature that exists on another 2D softwares. It will be a good thing to add this kind of selection inside the drawing mode of Grease pencil. Thanks for reading.