>Selecting text in command window and pressing enter, runs the selected code....
>
>(same way, selecting text->right click->Run selection...)

This is excellent because it creates a temporary prg file which allows you to run multiple line containing FOR loops SCANS and even DEFINE CLASS among everthing else the command window won't let you try in the command window. But any variable or class instances must be made public in order to mess with them later in the command window.