In the lower, html window if you type an expression like
3*4; and then go to edit, change program to maxima,
and click 'mark for evaluation', you get an error:
"list element in quotes followed by "]" instead of space".
The expression is not marked for evaluation. This did
not happen in 5.5 where it worked fine.
BTW, It would also be nice if the File/Save to file
command in the lower window would save the file in
html format rather than text, even when the file IS html.