The "Open Some Bookmarks" Firefox extension creates a new Bookmarks sub-Folder PopupMenu
Item as follows:
Open Some - Defer Others
When clicked, each Bookmark listed in the sub-Folder is loaded into a new Tab.
Additionally, the "Open Count" Options setting (default 1) causes the first
specified number of Bookmarks in the list to be opened. That is, Firefox obtains and formats each
page's contents in its new Tab.
The remaining Bookmarks listed, if any, are loaded, but NOT opened until selected by
clicking each one's Tab.
Also, the first Bookmark listed becomes the new active Tab.
If "Open Count" is set to zero, no Tabs are opened. They are ALL just loaded, and the
active Tab is not changed.
To install the Open Some Bookmarks Firefox extension: