The language we are using, Coffeescript, needs at least two words to run a function.

Many functions need an argument as the second word: for example, in pause 3, the argument is 3. But some functions, like st or feed, don't need any arguments.

You can use the word do to run a function without arguments.

For example, hide the turtle with do ht.

do ht

Show the turtle with do st.

do st

Draw a default black dot with do dot

do dot

You can also use () after the function name instead of () before it:


It means the same thing!