#once #create message .ND .tr %$ .EQ delim $$ .EN .LP Modify file "Example" so it looks like this, then type "ready". .pl 1 #once #create Ref .LP .EQ sum to N+n-m x sub mn > 0 .EN .pl 1 #once #create Example .LP .EQ xxx .EN .pl 1 #once neqn Ref | nroff >X1 & #once neqn message Ref | nroff -T$term %s/tinyms - #user neqn Example | nroff >X2 #cmp X1 X2 #log #next 7.1d 10