#once #create message .ND .tr %$ .EQ delim $$ .EN .LP Let's do one more example of from-to for practice before we go on to the next topic. Modify "Example" so it produces output that looks like this, then type "ready". .pl 1 #once #create Ref .EQ delim $$ .EN .LP Let $Q( pi )$ be $sum from {i= pi sub 1} to {i= pi sub 2} x sub i$. .pl 1 #once #create Example .EQ delim $$ .EN .LP .pl 1 # #once neqn Ref | nroff >X1 & #once neqn message Ref | nroff -T$term %s/tinyms - #user neqn Example | nroff >X2 #cmp X1 X2 #fail Don't forget to set delimiters before the .LP line, and get the spaces right around the dollar signs. #log #next 8.1a 10