Inquisit 5 allows you to run individual elements in a script, such as blocks, trials, stimuli, or instruction pages. This can be very handy for demonstrating tasks and methods in lectures and presentations, and provides a convenient way to quickly test new elements.
To run a given element, simply right click anywhere within that element's definition in the script editor and select the Run command from the context menu. You will be prompted for a subject id and group id, after which the element you selected will run. If the element was a stimulus, it will display all of the stimulus items one at a time. If it is a trial or block, it will simply run it.