Browsing Brazilian Portuguese translation

http://www.docbook.org/tdg/en/html/qandaentry.html

This is used as a label before questions in a question-and-answer
set.  Typically, questions are simply numbered and answers are not
labelled at all.  However, DocBook allows document authors to set
the labelling style for a qandaset.  If the labelling style is set
to 'qanda', this string will be used to label questions.