I just had an idea for an Editor. I think it would work well.
1/ You have an option to add a folder to the editor.
2/ On the folder you can type anything you want including Pseudo Code.
3/ Then you can click on the folder, and type in the real code.
4/ The folders work downwards like a program.
It's just a simple idea, but if you imagine writing out your Pseudo Code on folders first it makes the editor pre organised, and keeps your thoughts roughed out, and also works as REMS without you needing to add any rems to the program.
I made it quickly, but you can type in a lot on these large folders. You could make it so that the back file scrolls up to type in the extra details.