abstract ;;Quote: inter-file branching uses path names for variants, just like copying; files are linear sets of revisions

67 ;;Quote: a file has a name, temporal revision names, and variant names; the variant selects alternative implementations from a branch point; forms a version tree

68 ;;Quote: combining revisions and variants creates two hierarchies with disparate semantics; emphasizes the mainline and branches of existing files

72 ;;Quote: if integration history tracks individual deltas between variants, do not need to merge deltas back into the source

74 ;;Quote: Piccolo used inter-file branching without branch views or integration history; supported dozens of products over three continents; P3 is available