In addition to the scanned value GraphLabels, general purpose GraphLabels can be manipulated using the New, Delete, and Edit GraphLabel action buttons on the left of the GraphLogView display. The "New" action button creates a label in the graph area. The "Delete" action button removes selected labels. The "Edit" action button brings up an Edit dialog for the selected labels. Editing a label allows the user to change the text or font of the label, using a standard XWindows font specification string. Note that Select mode must be activated to select these labels for the Edit and Delete operations, and that clicking wit the right-mouse-button (RMB) will automatically edit the label.