What is the meaning of a single and double "check" mark in VS Code in down right corner in the Status bar?

[DawidArdelli]

Hi, does anyone know what is the meaning of this mark? I've been searching for a while for an answer but I haven't found anywhere.

screen

[zhouyc98]

It represents the document's formatting status.
As a SO answer said (https://stackoverflow.com/questions/67187505/what-is-the-meaning-of-the-double-v-markedprettier-on-the-vscode):

A Single Check represents that Prettier is enabled and working in your current environment and double-check symbol represents that your current document is "fine" according to the rules specified in the Prettier Extension.