Control flow Control flow Illustrative lines, not from Note G 1  V1 × V2 → V3 2  V3 + V4 → V4 repeat start 1 then 2 2 then 1 different end state illustrative: V1 = 2, V2 = 3, V3 = 0, V4 = 10 value wanted passes V4 at the end (Lovelace 1843, Note G)