Q and A sets with olinks: no generated text

Hi list,

I have a collection of <qandaset> files, which are used in master documents of the <article> type. I use olinks to refer to different <qandaentry>s in these files. However, the generated links in HTML output show only the question label and number, for example: "Q:4."

Is there any way to get, for example, "Q: What is wrong with my olinks?"?
I haven't found anything on this issue in Bob's book. I have played with different xrefstyle parameter values, but none of them worked.

Thanks in advance,

-Zbyszek