A "VS file" is generally a shorthand for a `.vs` extension, though the same phrase can also refer to Visual Studio’s `.vs` folder, making the correct meaning depend on the workflow producing it; when it’s an actual `.vs` file, it’s typically a vertex shader text file readable by editors, containing HLSL elements like `cbuffer` with semantics such as `SV_Position`, or GLSL patterns such as `vec3` updating `gl_Position`.

Because the `.vs` extension can be reused by many programs, a `.vs` file may be plain text or binary depending on the software, and if it appears unreadable the right approach is checking what created it; but a folder named `.vs` next to a `.sln` file is Visual Studio’s cache directory containing indexes, not actual source files, and should be excluded from Git, with deletion generally safe since Visual Studio rebuilds it—though this resets local preferences such as window arrangements.

".vs" can mean something else because file extensions are simply open labels, with Windows relying on them only to match files to programs, letting different developers adopt `.vs` for various internal purposes, so assuming that all `. Here's more regarding advanced VS file handler look at the web-site. vs` files are vertex shaders isn’t reliable even though it’s common in graphics; another application might use `.vs` for its own preferences, and Windows will still list it as a "VS file" unless some installed software has taken over the association.

A `.vs` file can also be "something else" because its meaning shifts with context; in game engines it often corresponds to a vertex shader as seen alongside `.ps` or `.fs` in shader folders, but other systems may treat `.vs` as a text config or script with JSON-like formatting instead of shader syntax, and in certain cases it’s binary, unreadable in editors because it holds compiled or cached data, making the file’s true identity dependent on its source and the application that successfully opens it.

If you need to quickly identify what your `.vs` file represents, the best tactic is to use the extension as a clue and confirm through evidence: look at surrounding files and folder context, inspect the "Opens with" field in file properties, and open it in a text editor to see whether it’s shader code, some other readable text, or binary, which almost always clarifies its purpose quickly.