An invisible character that affects the joining behavior of surrounding characters (See Section 8 2, Arabic , and "Cursive Connection" in Section 13 2, Layout Controls )
Consider the title "Carpenters and Joiners of America" - The Joiners were those expert in making up wood joints of many various types whether for cabinet or construction purposes, the making those joints is called joinery
A type of montage where a series of shots are taken from the same viewpoint and the prints from those shots are physically stuck together to give an overall vista of the scene