maybe that was confusing...It explains it in the editor_manual in the n game folder.

way I know how to submit a demos is to go to the list of user levels, then select the level that you want. On the left there is a box with the demo data, however the level data is in it as well. Scroll down until you see the first # sign, signaling the end of the level data. Highlight everything after that # sign and copy and paste into the demo data box under "add a comment" here for everyone to use. To see it, go to Ned, paste the level data in the top text box, push L to load the level, paste the demo data in the bottom box, push 3 to load it, then Q to start it, and finally P to play it, making sure caps lock is on. There is a way to record demos, but I've never done that...

This seems more like a puzzle than an action.... I don't get how to do it at all... Is it even possible?