... node

note that non-terminal leaf nodes don't make any sense, but they would contain a match, as well

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... operator

APaGeD makes use of that, because the lexer has to match all D lexemes, while the APaGeD grammar itself only uses a small subset

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... places

like XML does, for example

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... semantics

if you want to parse documentation comments, put them into the main grammar

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... matchers

most regular expression engines use backtracking, which generally has exponential runtime complexity

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... lookahead

like the one Perl regular expressions uses, for example

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... possible

which LR parsers deal with more efficiently for the same reason

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... statement

after the semicolon, for example

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... conflicts

the statistics that APaGeD prints when compiling the grammar, show whether there were conflicts

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