That is to keep it popular with their existing customers. However, future releases will probably change. You might find it on older slackware CD's in the contrib directory. If you let go of the mouse, and nothing is highlighted, they go away. If you move the mouse sideways, a different panel comes to the front.
Vertical motions select a menu item.
If you let go of the mouse, the highlighted command is run. Most of the commands are also available from the normal menu bar. 12.4 Highlight text zone, apply attibute You add styles to the highlighted zone of the document. Styles accumulate, so you can have bold, underline, or whatever. The Plainest style, will remove all others, if you have messed up somehow.