## Reference
Trial Variable Editor

Trial variables provide the added flexibility of varying an aspect of the experiment relatively easily. The following table summarizes the trial variable types that SuperLab supports, how they are used, and which event types they can be used with:

Variable Type | Usage | Used With Event Types
Color | Vary the color of text being presented | Text
Number | Vary an event’s time limit | All event types; this variable can be used in the Event Editor’s Input tab
Location | Vary a visual stimulus’ position on the screen | Movie, Picture File, RSVP, Self-Paced Reading, and Text. For these event types, click on the Settings button in the Event Editor's Stimulus tab.