On Commands#Target selectors on the Minecraft wiki, it says that
rm are used instead of
distance in Bedrock Edition to target players by distance. However, that section is incomplete for the Bedrock Edition and does not provide any information about it. It also doesn't explain how
lm (experience level),
rxm (x-rotation), and
rym (y-rotation) work.
How do these target selectors work in Bedrock Edition?