Immediately:
tilde-expand when completing filenames
fix bug: "foo(15)" gets trickified to "foo(15"
fix bug: can set marks on word 0, leading to problems
Add configurable (regexp-based?) way of detecting end of sentence etc, so we
can exclude 'Mr.' etc.

0.4:
A 'skip to content' key, which hunts out link-sparse paragraphs of text
Localisation - unicode handling etc
Try to optimise parsing etc

0.5:
Do the "rendering" ourselves, rather than invoking lynx -dump. This will allow
us to handle named anchors much more elegantly, and handle input fields and
even images. One could even imagine an SDL front end which flashed an image as
if it were just another word...

Misc suggestions:
Threading
Tabs
Multiword mode, in which we try to show around 6 chars per line
Support MS Windows
