Textual Reprsentation

0 In order to make cups of tea
  1. Boil water
1.1. Fill kettle
1.2. Put kettele on stove
1.3. Wait for kettle to boil
1.4. Turn off gas
2. Empty pot
3. Make pot
3.1. Warm pot
3.2. Put tea leaves in pot
3.3. Pour in boilling water
4. Wait 4 or 5 minutes
5. Pour tea
5.1. Put milk in cup
5.2. Fill cup with tea
5.3. Do sugar
5.3.1. Ask guest about sugar
5.3.2. Add sugar to taste




Plan 0 : do 1 at the same time, if the pot is full 2
them 3. - 4 after 4 or 5 minutes do 5

plan 1 : do 1.1, 1.2, 1.3, 1.4 when kettle boils do 1.5

plan 3 : do 3.1, 3.2, 3.3 in that order

plan 5 : do 5.1, 5.2 if the cup is empty do 5.1 else do for each guest 5.3

plan 5.3 : do 5.3.1 and if the guest wanted do 5.3.2