Sequence signals are use in a stage play wherein the characters are given their guide on a stage play.
Sequence signal in Romeo and Juliet example :
first- use before any other time,order ,or importance. (This takes place in Verona, Italy.)
and-use to indicate connection or addition especially of items within the sane class or type. (Classes were differentiated and sorted)
before-use to refer to something that might happen (the story line and dialouge of the story)
end-a point that marks the limit of something. (The conclusion)
