[A relationship that holds between a process and a characteristic in which process (P) positively regulates characteristic (C) iff: P results in an increase in the intensity or magnitude of C.]
[x posterior to y iff x is further along the antero-posterior axis than y, towards the body/tail. An antero-posterior axis is an axis that extends through an organism from head end to opposite end of body or tail.]
[X preceded_by Y iff: end(Y) before_or_simultaneous_with start(X)., x is preceded by y if and only if the time point at which y ends is before or equivalent to the time point at which x starts. Formally: x preceded by y iff ω(y) <= α(x), where α is a function that maps a process to a start point, and ω is a function that maps a process to an end point., X preceded_by Y iff: end(Y) before_or_simultaneous_with start(X)]
