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.gbm file extension

.gbm
MapServer bitmap store file. Contains bitmaps associated with the sheet file (.gsf) of the same name.

For more information see:

Can you add to this? Do you know of any applications not already listed which will work with .gbm files, view .gbm files or open .gbm files? Are you able to contribute any additional reference information or file format information about .gbm files or have you spotted any errors or omissions? If so please let us know by emailing us at feedback@cryer.co.uk - Thank you.