Parameters in extensive form

[stengel]

• allow replacement of numerical values for chance probabilities and payoffs with parameters (same parameter may appear in more than place, probability p should be automatically complemented with remaining unknown probability such as 1-p if there are only two moves, or 1-p-q if there are three moves, with q as a new parameter or a constant; this suggests for chance moves only variables but not expressions should be allowed; for payoffs expressions may be possible).

  Parameter RANGES displayed separately on the side, such as p=1..4/5, for example (only numerator as separate integer). Then the game will be analyzed for all integers in the range, including singleton as range.

  Should the strategic form be COMPUTED SYMBOLICALLY in terms of these parameters? (Before solving it needs to be converted to numerical values for sure.)