These instructions are based on Cadcorp SIS Desktop version 9.0 and assume you have set the default coordinate reference system to British National Grid (EPSG 27700). The instructions are also valid for the free, read-only version, Cadcorp SIS Desktop Express.
To load and display GML data in Cadcorp SIS Desktop:
Open an existing map or create a new one.
In Home, click Add Overlay.
In the Overlay Types dialog:
Files: Select File and click Next.
Navigate to and select the file on your computer and click Finish.
Your GML data now displays in both the Maps panel and map area. The data is un-styled and will look similar to the following image:
