This extension allows the player to create Garry's Mod's Derma panels (such as Dframe, DButton, etc). An Example video can be found here: https://drive.google.com/open?id=1MZWlPZ2Kw71UmFu7NSF8Rhu5U_8jZSMH

https://github.com/Linus045/e2_vgui_core/wiki

https://steamcommunity.com/sharedfiles/filedetails/?id=1381355814