5 Graph Description Language (GDL) - Absint

focus. The entire graph is drawn in self-adaptable fish-eye view, consequently this operation
enables the entire graph to be easily browsed through by moving the focus over any points
of interest.
• When the left mouse button is pressed and held, followed by dragging over the graph window,
a rubber band appears. This not only causes the origin to be set but also a scaling to be
calculated so that just the area inside the rubber band is magnified to fit in the graph window.
3.3.9 Centering Nodes
Select Center Node... in the Position menu of the menu line or press the n key to open the Title
dialog box. This enables nodes to be continuously chosen which are centered in the main window.
3.3.10 Show Neighbors
Select Show Node in the Position menu of the menu line or press the s key to select a node
to show all its direct neighbors (connected by an visible, invisible or hidden edge) in the graph
specification. Edges can be hidden because egde classes can be hidden (see edge classes on p. 27)
or because of folded or boxed subgraphs (see subgraphes on p. 27).
Each neighbor is annotated by an arrow head in order to distinguisch outgoing edges from incoming
ones. A number in parentheses indicates the class of an edge. Invisible edges are indicated,
too.
3.3.11 Scroll Menu
The submenu of the menu item Scroll of the Position in the menu line offers different ways of
moving the virtual window through the coordinate system.
Menu item Movement of virtual window
Panner Invokes the panner window
Left 32 pixels to the left
Right 32 pixels to the right
Up 32 pixels upwards
Down 32 pixels downwards
LLeft (d) 256 pixels to the left
RRight (c) 256 pixels to the right
UUp (a) 256 upwards
DDown (b) 256 downwards
LLLeft
RRRight One screen size (size of graph window)
UUUp in the corresponding direction
DDDown
Origin Moves to the absolute position (0,0)
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