Introduction - If you have any usage issues, please Google them yourself
LL (1) grammar is used to determine the top-down analysis techniques. LL (1) the meaning is: the first show that L is top-down analysis of input strings from left to right scan, the first two L analysis showed that the left will use the most derived, 1 shows that only a symbol to the right to see it to decide how derived, that is, to choose which production (rule) for derivation.