How to ... initialize parameters

Choose the value field corresponding to the parameter name in the parameter panel (use scrollbar if necessary to display the required parameter) and enter the value from the keyboard or using the keypad. Note that you can enter expressions in the value field. These expressions are not symbolic relations. They will be evaluated numerically based on the parameter values already assigned. This evaluation takes place when you press the Start button. You can force this evaluation without computing the whole expression by pressing Enter in the value field. The computed value will appear then in the value field. If an error occurs, it will be displayed in the result window.

As follows from above, each value field is a "small expression input line". The difference is that new identifiers are not allowed in the value fields. The expressions there must use only parameter names already present in the main expression.

Note: MathMate has a special "meta - variable" X which is automatically assigned the value of the last computed expression. It may be used for iteration or just for convenience of computations, allowing to break complicated expression into pieces. If you include the X identifier in your expression, don't be surprised if the next computation of the same expression returns a different value. This is because X has changed its value after the first computation.

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