What action does the 'L' key perform during playback?

The 'L' key is commonly associated with the function of fast-forwarding during playback in many editing software and video applications. When pressed, it increases the playback speed, allowing the user to move through content more quickly. This is particularly useful when reviewing footage or when one wants to skip ahead in a timeline without losing context.

The use of the 'L' key enhances efficiency by enabling users to navigate through video or audio content swiftly, making it an essential tool for those working in editing or production environments. The other options, while they represent different playback functions, do not align with the standard function associated with the 'L' key in most applications.