+STR
+DOC
+SEQ
+SEQ []
=VAL :a
=VAL :b
=VAL :c
-SEQ
+MAP {}
=VAL "a
=VAL :b
=VAL :c
=VAL 'd
=VAL :e
=VAL "f
-MAP
+SEQ []
-SEQ
-SEQ
-DOC
-STR