Quickbook warning

[grisumbras]

From build output:

Generating output file: ../../bin.v2/libs/json/doc/json_doc.xml
/home/grisumbras/dev/cppal/boost/bin.v2/libs/json/doc/reference.qbk|92| warning: line breaks generate invalid boostbook (will only note first occurrence).

reference.qbk:92

    [Constructor. [br][role silver —][br]Copy constructor. [br][role silver —][br]Pilfer constructor. [br][role silver —][br]Move constructor. 

I've looked through quickbook sources, the tool seems to warn on any use of [br], so the only way to remove the warning is probably to use paragraphs.