I have just come across an online document processor called j2e, which stands for "just2easy" apparently. It looks fantastically like Textease, (these are the Textease developers), so is highly suitable for education. I have really liked the online collaboration of Google Docs, but it is very MS Word-like. j2e has all the Textease-type features. It seems that j2e has been shibbolethised, so will work within Merlin. What a fantastic tool this would be in Merlin. Interesting to follow developments on Geoff's blog