Alignment Viewer Pro contains all the features and tools from our base Alignment Viewer app, along with new added features and enhancements of existing ones.- Support for chainage equations- Improved formatting of chainage/station & offset- Improved support for Feet, US Survey Feet and Imperial measurements overall- Detailed cross sections (View point level, offset, grade and line name)- Support for local transformation shifts- KML polygon support (supports viewing polygon name on the tapping of the polygon)- Directional North arrow on photo watermark- Additional fields to pins- Added support for tagging images with values (works with our Picture Mapper Pro software)- Improved file structure and image location structure.- General bug fixes from our base version.