1234567891011121314151617 +STR+DOC+MAP=VAL :Not indented+MAP=VAL :By one space=VAL |By four\n spaces\n=VAL :Flow style+SEQ []=VAL :By two=VAL :Also by two=VAL :Still by two-SEQ-MAP-MAP-DOC-STR
+STR
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=VAL :Not indented
=VAL :By one space
=VAL |By four\n spaces\n
=VAL :Flow style
+SEQ []
=VAL :By two
=VAL :Also by two
=VAL :Still by two
-SEQ
-MAP
-DOC
-STR