mxbutterfree answers Is there an Ultimate text editor?

[mxbutterfree]

For derendering latex in Emacs, see https://​​github.com/​​io12/​​org-fragtog.

For drawing images in line, you could try https://​​github.com/​​misohena/​​el-easydraw.

[Johannes C. Mayer]

I was thinking more free hand drawing.