This invokes the KDE help system starting at the KWrite help pages (this document).
This changes the mouse cursor to a combination arrow and question mark. Clicking on items within KWrite with this arrow will open a help window (if one exists for the particular item) explaining the item's function.
This calls a dialog box to help the user help the KDE team to track down and solve any problems(bugs) in the program. The dialog attempts to do this by means of email using the information given by the user.
This will display version and author information
This displays the KDE version and other basic information.