Typing a member access operator (for example, '.' in Java' or "->" in C++) displays a list of the members for the corresponding object or symbol. To access this feature on demand, press Alt+Dot.

Show Comments - Comments are displayed in a mini HTML window which supports rendering Javadoc, Doxygen, and XMLdoc comments. When a symbol has multiple definitions or overloads, and multiple sets of comments, the comments will indicate that you are looking at item "". Click on the arrows or use Ctrl+PgUp and Ctrl+PgDn to cycle through the comment sets.
Completion on Space - Pressing the spacebar when List Members is displayed will insert the longest unique matching prefix from the symbols in the list. For example, if the list contains FLAG_CHAR and FLAG_LONG, then typing FL completes the line of code up to FLAG_.