Most Recent Calculations: This drop down contains a list of the most recent well curve calculations.  Select an item from this list to quickly redo calculations after you have modified your curves.

Name:Specify the name of a curve to write as the output.  You can select an existing curve, or type in the name of a new curve.

Output Source:Specify a source for the well curves that will be output.  You can leave this blank, or specify an existing source.

Variables:  Use the drop down to enter a well curve name into the expression.

Expression: Displays the final output computation expression. The expression is created by selecting Variables and from the drop down, and using the keypad to select operators and constants.

Note on operators:The operators are all unary operators. They require one value after the operator on which the operator will be performed. That value may be a grid. Thus, the expression abs "Grid A" will compute the absolute value of "Grid A". The abbreviations used are: abs (absolute value), sqrt (square root), log (natural log), exp (natural exponent), log10 (log base 10), and exp10 (exponent base 10).

Clear: Erase the existing expression.

Check: Performs a check to ensure the expression is valid. No output is created.