Remove the hungry-thirsty rules, keeping the default ones, by using excise -task, or re-start Soar
and load the default rules. Now load "ht.s7" and set the watch level to 0. Now
initialise Soar (using init-soar and use pwatch to look at
ht*propose-op*eat and ht*apply-op*eat fire.
Now type run 3 to go to where the action starts. Now look
around. There are objects that have o-support and objects that have
i-support.
preferences s1 operator
will show you objects with
i-support.
preferences s1 hungry
will show you values with o-support.