Increments the instance count of a dimension or callout by 1. It uses the 2X/3X prefix, but it can be modified to use suffix, "2 PLC", or any other syntax. These macros run as separate methods from within a single macro (.swp) file. So you can't run them using Tools>Macro>Run. They must either be assigned to buttons or dropped into the \SolidWorks\macros directory and assigned a keyboard shortcut.