Why does the chart from Tools > Options > Keyboard and Mouse > Key Bindings ->"Save Chart"
have sections "vi-command" and "vi-visual" ?
This chart could be a lot fancier - with collapsible sections and an index.
Also the save dialog has a "Save as type" - that lists *lots* of types.
The feature seems to support XML and HTML - saveAsType should be limited to the set of types actually supported.