This command ignites your character (setting you on fire), but you do not take damage. You can set fire to other flammable objects/entities by colliding with them (e.g. jumping on them).
The syntax for the burn command is as follows:
burn
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That Sounds Perfect!Find below working examples of the burn command.
burn
This is the only way to use the burn command. Typing this into the console will set you on fire.