What is mean file:workspaces in package dependencies?

I try use npm 7 workspaces

"workspaces": {
    "packages": [
      "packages/apps/*",
      "packages/components",
    ],

and after install I see in my package.json

  "dependencies": {
    "@project/components": "file:workspaces/components",

Is it correct ? And what is mean file: ?

from What is mean file:workspaces in package dependencies?