The Quick Paths algorithm, unlike Show Paths, will ignore layers that are set invisible.
Since extraction is not used, there is no concept of devices, so that results may not be as expected, and not be as seen with the Show Paths command. For example, consider MOS devices. Since, the source and drain are connected to a common area of the ``active'' layer, which is a Conductor, the simple algorithm used in this command will interpret the source and drain as being connected (since it does not recognize the MOS device). In order to get meaningful results, it may be necessary in this case to temporarily remove the Conductor keyword from the active layer. This can be accomplished with the Extraction Parameter Editor.
If layer-specific selection is enabled, one must click on an object on the current layer to select the path. Otherwise, clicking on any conducting object will highlight the connected objects. Only one path is shown.
The boolean variable LayerSearchUp, if set, will enable searching for layers from bottom to top if set, rather than the default top to bottom. This affects the conductor chosen if the user clicks over more than one conductor layer, and layer-specific mode is not active.
If a dark-field ground plane has been specified in the technology file, the implied connectivity to ground is similar to that in force for the extraction system, though can be specified with the QpathGroundPlane variable. This can be set with the !set command to an integer in the range 0-2.