MarkAsVisited
MarkAsVisited "foldername" /subfolder /all
Marks Bookmarks as visited.
You can specify a folder name or use the /all parameter to mark all Bookmarks as visited. Subfolders can be defined by separating the folder and subfolder with a backslash, for example "folder\subfolder".
If you specify a folder name, you can also use the /subfolder parameter to mark Bookmarks in subfolders as visited.
The parameter /all can only be used by itself and cannot be combined with other parameters.
Example:
MarkAsVisited "Tools" /subfolder
MarkAsVisited /all