Files appended with the .ast extension are used by many image editing applications developed by Adobe Systems. Classified as settings files, these AST files are also called Adobe color separations table files. Users of these Adobe products can enter configuration settings related to the output color of a project developed using these applications. These configuration settings are saved by the Adobe application in an AST file, and the Adobe software then associates the project to the AST file. Users can define these settings via the features integrated into these Adobe image editing applications, and this ensures consistent color quality and vibrancy of projects when printed, published online or exported to PDF among other formats. These applications also use AST files for images developed with these Adobe image editing programs that use CMYK and RGB color modes . Desktop color separations files are also commonly used by other popular image editing applications, and the utility of these files for the software and the user are similar to the utility of Adobe image editing software for AST files.

An Ability Spreadsheet document file can be created with the use of the Ability Spreadsheet software, which is a program that is included in the Ability Office suite of applications. An Ability Spreadsheet document file is similar to a Microsoft Excel spreadsheet document, and recent versions of the Ability Spreadsheet program is implemented with support for importing the text, binary and numerical or statistical data stored in these Ability Spreadsheet document files into a Microsoft Excel spreadsheet document. The content of an Ability Spreadsheet document file is integrated with text, binary and XML-based formatting standards and also implemented with data encoding specifications that are used by the Ability Spreadsheet program to store its content in the AST file format as well as to append these Ability Spreadsheet document files with the .ast extension. Other programs use the AST file format, though for different purposes.

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