Glad to hear that despite the weird behaviour with Firefox, you enjoy the nostalgia! If it helps, if you want to write really long programs, it's possible to cr

Glad to hear that despite the weird behaviour with Firefox, you enjoy the nostalgia! If it helps, if you want to write really long programs, it's possible to create .atto files in a text editor and then import them into atto by pressing Ctrl+O. Writing long programs in atto is nice, too (since you get the syntax highlighting), but of course it's somewhat hard in Firefox at the moment. Chrome/Chromium-based browsers work well with atto, though, since that's my primary testing target (Firefox second, then Safari third if I can be bothered with it!). Testing atto myself in Firefox seems to be consistent when I type in sentences, just that there's a bit of rendering delay which may feel a bit unnatural. Of course, it's hard for me to investigate how the problem manifests for you; but is it basically like this for you?