These functions used to be called through Cohatoe and require some understanding of the source being edited. Scion should be extended to provide us with a parse tree.
Fixed in JP's branch (git://github.com/JPMoresmau/scion.git and git://github.com/JPMoresmau/eclipsefp.git). Scion provides an outline command that shows top level names with their blocks. that's what we use for the outline view and code folding