这是HELP中的一段：
When you turn on status in STL, the Program Editor window is divided into a code region (left side) and a status region (right side). The status region can be customized according to the types of values that you want to monitor.
There are three categories of values that you can monitor in STL Status:
>Operands: You can monitor up to three operands per instruction.
>Logic Stack: You can monitor up to the four most recent values from the logic stack.
>Instruction Status Bits: You can monitor up to a dozen status bits.
The STL Status tab of the Tools>Options dialog box allows you to select or deselect any of these categories of values. If you deselect an item, it does not appear in the Status display.

改变设定在Tools/Option/STL status中，也可以从那得到更详细的资料。