## Treemap

The treemap shows the whole contents of the directory tree straight away.

It represents each file as a colored rectangle, the area of which is proportional to the file's size.

The rectangles are arranged in such a way, that directories again make up rectangles, which contain all their files and subdirectories. So their area is proportional to the size of the subtrees.

The color of a rectangle indicates the type of the file, as shown in the extension list.

The cushion shading additionally brings out the directory structure.

### Operation

You effortlessly see the big rectangles, that is the big files, even if they are hidden deeply in subdirectories in the directory tree. Click on them: the directory list opens the path to the file, and you can read its location and attributes, and - if you like - apply a cleanup action on it, e.g. delete the file.

Navigate in the directory list: the respective selection is highlighted with a colored frame. In this way gain an impression of the proportions: How big, for example, is C:\windows compared with C:\program files?

The context menu options "Select Parent" and "Re-select Child" are also useful for the navigation.

Zoom. The option "Zoom in" enlarges the treemap, so that a subtree is displayed full size. As it were you make a step towards the selected item. The directory list show the root of this subtree with a blue frame. By "Zoom out" you step back, and the parent element is shown again.