The Appearance page allows to change the default background color used in KGraphViewer if a graph does not have its own background color.
The Parsing page allows to select an external command or the internal library for parsing Graphviz DOT files.
The Reload page allows to change the behavior of KGraphViewer when a file is changed on disk by another application. You can choose a default action (reload automatically or ignore changes), or to be asked each time.
The Opening page allows to change the behavior of KGraphViewer when a graph file is opened from outside the current session. You can choose a default action (open in an existing window or in a new one), or to be asked each time.
The Session Management page allows to change the KGraphViewer's start-up behavior. You can choose a default action (reopen files of the previous session or not), or to be asked each time.