When you are using filtering in a Mylar view you have the option of temporarily showing all children of a filtered node by <alt>clicking a node that is not currently selected. For example, you can <alt>click a source folder, keep the <alt> key down, and continue drilling down until you find a method of interest.
Predicted interest of errors
Only available in Phase 2 of the user study. Java elements that have errors get a predicted interest, which means that they show up in views such as a the package explorer. Once the errors are fixed the predicted interest goes away.
Filter declarations in Package Explorer
If you don't like Mylar's constant showing of Java members in the Package Explorer, select the drop-down menu, then "Filters..." and enable the "Mylar Java Declarations Filter". It will then stick in the menu in case you want to toggle between modes.
Automatic interest filter toggling
By default the interest filter will automatically be toggled on the Package Explorer when a task with context is activated, and toggled off when the task is deactivated. This preference is under Mylar -> Java.
Interest filtering for the Java Browsing perspective
Interest filtering can be toggled for the Packages, Types, and Members views simultaneously by clicking the leftmost toolbar button visible below.