In the ancient time, there were some pavilions for travelers in the remote area. The pavilions could be as simple as shade booth, or as complex as small restaurant.
We can recall another character Rest - 休 (Post 75). Its shell bone script is
The left is a Person, the right is Wood (= Tree), a Person + Tree = Rest, when there was no pavilion, people just sit against a tree truck.
The small seal script of character Stop is
The clerical script of character Stop is
The song typeface of character Stop is