What does the phrase "toe the line" mean?

Question

I just need 2 know wat it means and possible its orgin

Answer 1

Toe the line" is an idiomatic expression with disputed origins. It is often equated to "toe the mark," which has the same meaning: to conform to a rule or a standard. One documented origin of the phrase is as an athletics analogy that originated in the early 19th century. Other suggested origins are the center line in boxing which boxers were instructed to toe at the start of each round, or the lines created by deck planks on ships which naval crews used to “fall in line".

Answer 2

It means that you conform to a rule ie. do what is expected. One can also say 'toe the mark'.

Answer 3

It means to obey - to do as ordered.  

I think it comes from the military, maybe when soldiers were ordered to stand in formation with their toes on a line on the floor.  But that's just a guess.