When working on a range of code that you want to test out in the Python Shell (and the Debug Probe in Wing Pro) you can set that range of code as the active range for that shell. This makes it easier to try out the code as you edit it. To do this, select the range of code in the editor and then click on the active range icon in the top right shell, to the left of its Options menu. Wing will highlight the range in the editor and display additional icons in the top right of the shell to evaluate or jump to the active range.