In the HighLanders level (Mountains)
There is a confusing use of comments
First of all
// If [i + j]th letter of the string is not equal [j]th letter of world, then break loop
I think its supposed to say word instead of world but i can be wrong.
// If loops are ended then the word is not inside the string. Return False.
Its not needed to finish the level and its only confusing people(me) since i think we shouldnt add unnecessary code and keep everything as simple as possible.