Overview
Using the ZWCAD application interface (ZRX) API, GTX has developed a 100% ZWCAD-compatible plug-in that adds raster file editing and CAD conversion, with PDF support, to ZWCAD

Features
-Support for black and white scanned images and PDF files
-Open a black and white or PDF scanned image and edit in ZWCAD
-Improve scanned raster image quality using automatic and semi-automatic tools
-Using GTX's Intelligent Object Picking (IOP) technology, treat raster entities just like CAD objects, including raster object selection and snapping

Know more about GTXRaster CAD Series