What does (Restricted) mean?

Why do we have to start level runs from chapter select?

"What does (Restricted) mean?"

Read rules for category plz

"Why do we have to start level runs from chapter select?"

This is due to the fact that the RTX version does not have an autosplitter. Therefore, you have to count manually using a video editing program. And for the convenience of determining the first frame of the start of the race, please start the launch by selecting the chapters.