INTUS Graph Mask Archive
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What is an IGMA file?
File used by INTUS terminals, which are devices used for timecard management, data collection, and access control; saves an archive of GUIs for a terminal, each of which provides a different user interface for the terminal screen; used for bundling all graph mask files together for a terminal.
IGMA files are stored in a compressed format and are compressed with the Deflate algorithm.