What does toggling the Source/Record option in the timeline allow you to do?

Toggling the Source/Record option in the timeline primarily allows you to select source clips for playback. This function is essential for editors as it enables them to switch between viewing the source clips in the project and the sequence they are currently working on. By doing so, they can easily preview clips that may not yet be part of the sequence, facilitating efficient editing and decision-making about which clips to use.

The ability to toggle this option is critical for maintaining a fluid workflow, as it provides a seamless transition between the material being edited and the original source material. Therefore, this feature is valuable when evaluating different parts of the footage, which aids in making informed edits.

While the other options may relate to editing features or tools within a video editing system, they do not capture the primary function of the Source/Record toggle, which is centered on accessing and selecting source clips for playback, enhancing the overall editing process.