The formatting options of list items are very limited. Currently only the use of images/icons and a simple text string is possible. Everybody used to full blown IDEs loves (and thus probably misses) decent features like short info strings behind the actual function/method/variable/consant and tooltip with additional informations that appears once a list item is selected for several seconds.
Alan asked for more concrete syntax/API stuff instead of mouthful explainations ... so here we go:
possible API for my suggestions.
In order to better explain my idea/feature-request I just attached a little mockup:
