A plugin may define one or more tree item marker to tag items of interest.

Tree items are marked in different ways:

Items with a colored background show that a plugin has set a marker
Items with a colored frame indicate that a collapsed child has been marked.
Items with a black frame indicate that there are several collapsed children with different marker.
Items with a dotted frame show a dependency. A marked item of the right neighbor tree depends on
Items can be grayed out. These items are either marked as unimportant by a plugin, or the user has choosen to gray out all items, for which no marker is set. this item. The dependent item is only marked, if the dotted item is selected.

"marker": tree item marker

The figure marker shows two plugins which define marker. The Statistic Plugin marks all items with information about the most severe instances with a blue background and an icon. The Launch Plugin uses green marker and does not define an icon. Both of them use marker for items of the system-tree and for items of the call-tree that depend on items of the system-tree.

The Tree Item Marker dialog (see figure pluginMenu) allows the user to change the color of each marker, to disable the drawing of colors or icons and to emphasize the marked items by graying out the other items.

This plugins adds an element to the context menu which allows to mark tree items manually. This is helpful to relocate the item after other selections have been done. The marked items are stored into the experiment specific settings.