+STR
+DOC
+SEQ
=VAL &a :
=VAL :a
+MAP
=VAL &a :
=VAL :a
=VAL :b
=VAL &b :
-MAP
+MAP
=VAL &c :
=VAL &a :
-MAP
+MAP
=VAL &d :
=VAL :
-MAP
+MAP
=VAL &e :
=VAL &a :
-MAP
-SEQ
-DOC
-STR