1%YAML 1.1
2---
3!!map {
4  ? !!str "block styles" : !!map {
5    ? !!str "scalars" : !!map {
6      ? !!str "literal"
7      : !!str "#!/usr/bin/perl\n\
8          print \"Hello,
9          world!\\n\";\n",
10      ? !!str "folded"
11      : !!str "This sentence
12          is false.\n"
13    },
14    ? !!str "collections" : !!map {
15      ? !!str "sequence" : !!seq [
16        !!str "entry",
17        !!map {
18          ? !!str "key" : !!str "value"
19        }
20      ],
21      ? !!str "mapping" : !!map {
22        ? !!str "key" : !!str "value"
23} } } }
24