This question is regarding the Standard or Ur When looking a

This question is regarding the Standard or Ur. When looking at the art work, what do the lines on the prisoners of war indicate? Also, is the standard of Ur a standard? Yes or No There is no section to post art questions, so if you are unable to help, please suggest an area I can go to for help! Thanks!

This is a question of art.Hence, I am unable to answer.