In Windows Explorer clicking the plus sign before a folder icon removes the indented sub-folders from the hierarchy of folders and changes the plus sign to a minus sign.?

In Windows Explorer, clicking the plus sign before a folder icon expands the folder, revealing its indented sub-folders within the hierarchy. This action changes the plus sign to a minus sign, indicating that the folder is open and contains additional sub-folders. To collapse the folder and hide the sub-folders again, you can click the minus sign, which will revert the icon back to a plus sign. This feature helps users navigate and manage folder structures efficiently.