4.3BSD-UWisc/lib/learn/eqn/L10.2c

#print
Does this sequence produce output with the equals signs
lined up?
  .EQ I
  x mark = y
  .EN
  .EQ I
  x+y mark = z
  .EN
Answer yes or no.
#copyin
#user
#uncopyin
#match no
#log
#next
11.1a 10