What is the ALT5 file format?
A file with the .ALT5 extension is a file known as Adobe Pagemaker 5 For Mac Document. This format is associated with N/A.
The reliable way to open a .ALT5 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 .ALT5 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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