Photoshop Action File

Photoshop Action File (also called Photoshop Actions File) is file format associated with Adobe Photoshop. It apparently stores a set of macros.

The format has a lot in common with PSD format, and uses many of the same data structures.

Identification
The known versions of the format begin with bytes (hex), followed by a field that almost certainly starts with.

There is evidence that other versions exist.

Specifications

 * Adobe Photoshop File Formats Specification → Actions
 * Tonton Pixel: Photoshop Actions File Format