- disallow connection between two comment lines as comment line indicates   that an element is annotated
- disallow connection between two comment lines as comment line indicates
  that an element is annotated


git-svn-id: 80d932a80928324f4d3d71af042e652e41ead033@1903 a8418922-720d-0410-834f-a69b97ada669

amolenaar/gaphor,amolenaar/gaphor