I've extracted some key information from the text you provided:

Summary: ViewCompanion Premium 15.00 is a software utility that allows users to view, edit, convert, and compare AutoCAD files and various image formats. It supports multiple file formats, including PLT plotter files, Adobe PDF, Autodesk DWF, Postscript, CGM, TIFF, CALS, and more.

1. ViewCompanion Premium can view, print, and convert multiple file formats.

2. It supports PLT plotter files using HPGL, HPGL/2, HP-RTL, and Calcomp formats.

3. The software has a compare feature to visually show the difference between two different plotter files (available in Pro version only).

4. Internal file explorer is now available again.

Release Notes:

* ViewCompanion Premium 15.00 is released with many new features and bug fixes.

* Some new features are only available in the Pro version.

* The main improvements include the compare feature, internal file explorer availability, and compatibility with latest Windows versions (Windows XP is no longer supported).

Let me know if you have any specific questions or if there's anything else I can help you with!

Free instal ViewCompanion Premium 15.00