You're looking for information on AbViewer 15 and its license key installation. Here's what I've gathered:

AbViewer 15 is a specific version of the software, which likely offers enhanced features, improved performance, and support for additional file formats compared to its predecessors.

AbViewer is a universal viewer for various file formats, including 2D and 3D models, technical drawings, and images. It supports over 50 file formats, including DWG, DXF, RVT, STP, and many more.