Plug-in Data Sources
Cadcorp VARs can write their own Plug-in Datasets for file formats not supported in core SIS Desktop 9.1.
Plug-in Data Sources are a special kind of Plug-in Dataset which does not use a single file, or related files, but instead reads graphics from a database or other non-file source.
See Dataset Formats for a list of available built-in Datasets, Plug-in Datasets, Plug-in Image Servers and Plug-in Data Sources.