A 2D display or simply display is always part of the user interface. It serves to display the network topology, the units' activations and the weights of the links. Each unit is located on a grid position, which simplifies the positioning of the units. The distance between two grid points ( grid width) can be changed from the default 37 pixels to other values in the setup panel.
The current position, i.e. the grid position of the mouse, is also numerically displayed at the bottom of the manager panel. The x-axis is the horizontal line and valid coordinates lie in the range -32736 ... +32735 (short integer).
The current version displays units as boxes, where the size of the box is proportional to the value of the displayed attribute. Possible attributes are activation, initial activation, bias, and output. A black box represents a positive value, an empty box a negative value. The size of the unit varies between 16x16 and 0 pixels according to the value of scaleFactor. The parameter scaleFactor has a default value of , but may be set to values between and in the setup panel. Each unit can be displayed with two of several attributes. One above the unit and one below the unit. The attributes to be displayed can be selected in the setup panel.
Links are shown as solid lines, with optional numerical display of the weight in the center of the line and/or arrow head pointing to the target unit. These features are optional, because they heavily affect the drawing speed of the display window.
A display can also be frozen with the button (button gets inverted). It is afterwards neither updated anymore, nor does it accept further editor commands.
An iconified display is not updated and therefore consumes (almost) no CPU time. If a window is closed, its dimensions and setup parameters are saved in a stack (LIFO). This means that a newly requested display gets the values of the window assigned that was last closed. For better orientation, the window title contains the subnet number which was specified for this display in the setup panel.