# Breaking the Rules - Opening Files in Alternate Apps > [!DANGER] Incomplete page! Working on it! You can force different apps to open different files, and get some very useful information. Most text-based files can be opened in TextEdit or text editors like [[VSCode]]. ## License Files Often time I find looking at a license file provided by a vendor can be interesting. They're often a common text data format like json, yaml or toml, but just with a custom file extension! ## Proprietary Formats Adobe Project files are a proprietary format! But also they're basically super fancy XML documents!