YAML::PP Lexer
- The Lexer turns the input into Tokens
 - This is debugging output of the tokens:
 
PLAIN                  L  1 C  1 "Lorem"
COLON                  L  1 C  6 ":"
EOL                    L  1 C  7 "\n"
INDENT                 L  2 C  1 "  "
PLAIN                  L  2 C  3 "ipsum dolor"
COLON                  L  2 C 14 ":"
EOL                    L  2 C 15 "\n"
INDENT                 L  3 C  1 "    "
DASH                   L  3 C  5 "-"
WS                     L  3 C  6 " "
PLAIN                  L  3 C  7 "sit amet, consectetur"
EOL                    L  3 C 28 "\n"
INDENT                 L  4 C  1 "    "
DASH                   L  4 C  5 "-"
WS                     L  4 C  6 " "
DOUBLEQUOTE            L  4 C  7 "\""
DOUBLEQUOTED           L  4 C  8 "adipiscing elit,"
DOUBLEQUOTE            L  4 C 24 "\""
EOL                    L  4 C 25 "\n"
: