TClipboardType.ctPrimarySelection value
The clipboard is the one designated as PRIMARY for the desktop. Implies that it is used for commands that accept a single argument. Historically, it is used for mouse selections, pasting using the middle mouse button, and explicit cut/copy/paste operations initiated from a menu item.
Declaration
ctPrimarySelectionDescription
Nothing more than the line above yet.
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.