In entity [toplevel] = SYSTEM "file://localhost/home/gerd/ocaml/smcvs/ocamlpkg/markup/rtests/negative/data_jclark_invalid/006.xml", at line 1, position 30:
In entity e, at line 1, position 10:
Called from entity [dtd] = SYSTEM "006.ent", line 2, position 14:
ERROR (Validity constraint): Entities not properly nested with ELEMENT declaration