You Don't Open Developer Mode on Clonk Rage, You have to download it separately (Click the link in the Related Links section below).
It will have a link that reads Download for Clonk Rage. Just find the file and extract the contents, then cut and paste into your Clonk Rage file. You can find this by going to: My computer/Local disk(C drive)/Program Files/Clonk Rage and then paste the contents.
Chat with our AI personalities
of course you can
Open chat, and then type "/gamemode #" (without quotes) Replace the # with: 0 (survival mode) 1 (creative mode) 2 (adventure mode) (only works if you enabled cheats when you made the world)
Open ROBLOX studio, Find your profile, the edit button is on your places.
It can't be run in DOS mode because it relies on Windows-specific APIs. DOS mode is running the program in either DOS, or in a DOS box under Windows. Basically, it is saying that it can't run on DOS because it is not a DOS program.
You need the Open for Business expansion pack, elevators are available with that under "build mode".