What is the AS4A file format?
A file with the .AS4A extension is a file known as ActivInspire Resource Pack. This format is associated with Promethean World plc.
The reliable way to open a .AS4A file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
We are still gathering the list of programs that open .AS4A files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
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