What are the purposes of a prologue in a play

A prologue is used to give readers extra information that advances the plot. They can give more background information about a story or describe a scene from the story that could be from the middle of the story to capture the readers' attention or some past event that is motivation for the novel. The prologue can also tell the story from a different point of view or a different time.

a myth is something that is told for many years that u go looking for and cant find and a truth is something that u can find in real life and can be story's of for example:

mermaid's and unicorns: u can't find them at all so they can be a myth cause u hear story's about them once u go looking for them u won't find them.

dinassours(can't spell): u hear story's about them at school by ur friends and one day ur dad takes u to a museum and u find fossils of them so u realize they are real and not fake.

answer: sure

explanation: i'd love to know everything but that burden is too much to bare.