When replacing a slide in the Titmus II-remote test drum, where should the arrow on the slide face?

The arrow on the slide of the Titmus II remote test drum should face up toward the rear or back. This positioning is crucial because it ensures that the visual stimuli presented during the test are oriented correctly for optimal viewing and accurate results. When the arrow points upward and towards the back, it aligns the slide with the operational mechanisms of the testing device, facilitating the correct presentation of visual tests to the subject. This placement is essential for maintaining the integrity of the testing process and ensuring that the results reflect the true visual capabilities of the individual being tested.