The ShowStep button
When you press the ShowStep button, MathXpert shows you with an animated mouse cursor what term to select, and then what mathematical operation to select from the menu. This screen shot does not show the moving cursor, but it shows the result. Now the student can continue by accepting the suggestion, or can click elsewhere to reject the suggestion.
The AutoStep button causes MathXpert to take one step automatically. The ShowStep button provides more information: it shows the student one way to accomplish that step by selecting an expression and making an appropriate choice of operation.