Share Email Facebook Twitter LinkedIn vlax-product-key (AutoLISP) 2013-04-10 Product Documentation Intermediate View Original Returns the AutoCAD Windows registry path (vlax-product-key) The AutoCAD registry path can be used to register an application for demand loading. Return Values A string containing the AutoCAD registry path. Examples (vlax-product-key) "Software\\Autodesk\\AutoCAD\\R19.1\\ACAD-D001:409"