#once #create message.ND.LPThe next neqn operation is called "sqrt" - it makessquare root signs over things, like this:.EQsqrt a+b.EN(They don't look very good on a terminal, unfortunately.)This one is very easy - to print the line above, yousay   .EQ   sqrt a+b   .ENThe "sqrt" operates on the first thing it findsso if you want something more complicated, like.EQsqrt {pi +1}.ENyou have to use braces to enclose the entirething.  This one was printed with   .EQ   sqrt {pi +1}   .ENAnd that's all there is to sqrt.Modify "Example" so it looks like this, then type "ready"..pl 1#once #create Ref.LP.EQf(x) ~=~ sqrt {ax sup 2 +bx+c}.EN.pl 1#once #create Example.LP.EQf(x).....EN.pl 1##once neqn Ref | nroff >X1 &#once neqn message Ref | nroff -T$term %s/tinyms -#userneqn Example | nroff >X2#cmp X1 X2#log#next8.1b 10