Files that contain the .tab file extension are commonly used for tab-separated data files. These files contain a table of information that stores columns of data that is separated by tabs.
The TAB file format allows the data contained in the file to be imported by almost any spreadsheet application, which will format the information contained in the file into individual data cells in spreadsheet format. These files are also commonly saved with the .tsv file extension.
The .tab file extension is also used for guitar tablature files. These files often contain guitar tabs along with song lyrics in text-based format.
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