basic:
laby_name_forward ();
laby_name_left ();
laby_name_right ();
laby_name_escape ();

rocks:
laby_name_take ();
laby_name_drop ();

loop:
while laby_name_look () = laby_name_Void do
  ...
done;

function:
let f () =
  ...

conditional:
if laby_name_look () = laby_name_Web
then ( ... )
else ( ... );
