Consider a sequence of pencils {Fp}. Fp will have two (2) endpoints, called nuts. A leaf, then, is any pencil conjoined on the chain [branched from the trunk of a tree]. For such a sequence, there are at most two leaves [one (1) each] representing the frames sequence:start (initiation) and sequence:stop (termination), which themselves can occupy the nuts. The leaf sequence parametric defines an opus. (also of interest Leaf🍃 Blue [yot])


