Syntax: !errlayer layer_name [prpty_num]This command will create polygons on layer_name corresponding to the error regions currently stored in the list of design rule errors. The layer will be created if it does not already exist, and will be cleared before updating (be careful!). All objects are created in the current cell. The second argument, if given, is an integer greater than 0 that is taken as a property number. Each created object will be given a property with this number, with the text being the error message for the error. If the argument is given but is not an unsigned integer larger than 0, no properties are stored.