The name of these formations derives from a 1/4 Tag formation, the formation obtained from a Squared Set after Heads Pass The Ocean.
A 1/4 Tag is a Wave between Outside Couples Facing In.
A 3/4 Tag is a Wave between Outside Couples Facing Out.
A 1/4 Box is a Box between Outside Couples Facing In. (e.g., From a Squared Set after Heads Touch 1/4).
A 3/4 Box is a Box between Outside Couples Facing Out.
A 1/4 Line is a (Two-Faced) Line between Outside Couples Facing In. (e.g., From a Squared Set after Heads As Couples Touch 1/4).
A 3/4 Line is a (Two-Faced) Line between Outside Couples Facing Out.
And, a 1/4 Diamond is a Diamond between Outside Couples Facing In.
And so on, and so on...