Figure 1: Gorilla plant preparation. Flow-chart representations of the data on processing sequences seen in a gorilla eating NETTLE Laportea alatipes and GALIUM Galium ruwenzoriense. Where the logical structure is asymmetric, the mirror form will also occur; the form shown is for a right handed individual. As is conventional with flow-chart representation, the sequence of actions - which here begins when the gorilla finds a food plant to eat - starts at the top and moves down. Rectangular boxes show actions, described by the words in them; brackets indicate actions which are optional, depending on environmental conditions. Dotted lines indicate bilateral coordination between the separate actions of the two hands. Boxes are arranged to left and right of the midline to indicate significant lateralities in the hand used (actions with non-significant laterality are represented on the midline). Diamonds represent branch points in the process, with the approximate criteria for the decision indicated in words in the diamond: a process may repeat or iterate until the criterion is reached. The sequence ends with putting processed food in the mouth.