Initial and final screens should not have their Ordering randomized

[johnwdubois]

1. A typical experiment should allow for several different types of screens, shown in sequence:

• Initial screens (instructions, text only)
• Initial screens (sample stimuli, for participants to try out)
• stimuli
• final screens (for follow-up questions, etc.)

2. Initial and final screens should not have their Ordering randomized.
3. When the designer creates an "Ordering" (e.g. random ordering), this should normally affect only a subset of screens (e.g. stimuli).