Escape and evasion map printed on playing cards distributed to Prisoners of War which could be soaked and pealed apart revealing the escape map. Many of the maps of the Pacific region were printed by the US Army Map Service, while the UK was responsible for many of the European Theatre maps. Many of the US Navy charts were folded in envelopes and distributed to the air crews before a mission, and to be turned in when the mission was successfully completed. They were called "drift charts" by the Navy, "...since their prime purpose was to indicate to aircrews survivors in their life rafts
LL parser separated by '+'. In a regular expression form T ('+' T)*. So the rule could be rewritten as Now there is no left recursion and no conflicts on either of the rules. However, not all CFGs have an equivalent LL(k)-grammar, e.g.: It can be shown that there does not exist any LL(k)-grammar accepting the language generated by this grammar. LL parser In computer science, an LL parser is a top-down parser for a subset of context-free languages. It parses the input from Left to right, performing Leftmost derivation of the sentence. An LL parser is called an LL("k") parser if