The correct placement of commas in the given sentence is:
This refers to the use of signs in order to either indicate a pause, show a list or perform a wide range of functions in the English language.
From the given sentence, your placement of commas is correct so there is no need for any adjustments because they show the pause after the use of the transition word "Yet" and there is no series of lists to use the commas for.
Read more about commas here:
https://brainly.com/question/2224789