This is the Graphical Editor Main Menu

You can select the mode of the graphical editor. In the displayed situation (Move Object) you can move objects, e.g. nodes or transition-arrows on the working field by moving the mouse-pointer above them, pressing and holding the left mouse-button changing the position as desired and releasing the button so the object will be replaced and the network will be redrawn.

The Create Node-Mode offers to add new queueing systems to the network.

The Outside-Node is a special type of queueing system. For open job-classes it represents both the source for new jobs and the sink for jobs leaving the system. Closed job-classes do not need a special node in common. For historical reasons and the easier calculation of relative performance values this node represents the visit ratio of 1 in closed job-classes. In the third mode (Create Outside-Node-Mode) you can place this special object.

Create Edge is needed to create transitions from one node to another.

To get a nice layout, with only a few crossings of the transition edges, you can rotate the nodes on the working-field using the Rotate Node-mode. Every time you click on a node it turns 90 degrees clockwise.

Last but not least the Destroy Object-mode. Every object you created can be ereased, of course. This regards to nodes, supporting corners of the transition edges or the edges themselves.

Under normal circumstances (Move Object-mode) a click on a node in the working-area the Node Data Menu will appear. To force this in any other editor mode the Node Data...-button can be used.

The second button offers the Job Class Menu, where you can add, copy or delete job-classes.