layers, in which case they can make electrical connections. 3D models for mechanical CAD and visualization. 3D models are external files that footprints can link to; they are not embedded in footprints and produces a VRML file which can be viewed with a VRML viewer. This feature is useful for visualization of the board assembly in cases where the user does not have access to MCAD software. Invoking

levels slider, but allow you to finetune the values. 7. These buttons allow you to control the visualization of the histogram. The first button makes it use a linear scale (the default). The second one