The menu of REC operators, predicates, and control symbols is defined within the header file RECTBL.H; it is similar to the keyboard menu except for being more concise, and including the REC control characters.
" space " "! - counter in form !n! " "@ - Subroutine " "# - Integer parameter " "$ - Double parameter " "% - 10% T predicate " "& - 50% T predicate " "' " "( start of expression " ") end of expression " ": - repeat the subexpression " "; - exit subexprn with value T " "@x - call the subroutine x " "A - strip of 3 plane sections " "B - define cell density (mils) " "E - show one plane section " "G - point of return map in color " "K - contours of rand-totl match " "O - select dimension of automaton" "Q - generate cubical checkerboard" "R - empirical mean field w/delay " "T - #n# T for totalistic rule n " "[ - start of comment " "] - end of comment " "_ - panic exit " "a - a-priori probabilities " "b - create random line (pl mils) " "d - insert diagonal in graph " "f - place frame around graph " "g - one point of return map " "i - iterate 2d gen mean f. curve " "k - keyboard interrupt request " "n - totalistic sum frequencies ", "o - degree of randomness (nbrhd) " "p - show cell density in panel B " "t - contour of s.c. 2-block freq " "x - show nth gen mean field curve" "z - clear one of the panels " "{ - start of program " "} - end of program " "~ - show parameter panel "