Qp voice link inv
What '?' in Qp voice link inv ("User voice?") means?
I do not know. Also from the code it is not immediately clear to me - would have to install to become completely clear (we should have more people doing that and documenting messages from that experience with text and screenshots). I interpreted it as being a link to the voting behaviour of "a user" (or "the user themselves"?).
class qp_UserPollsList, used by Special:Pollresults page, may display QueryPage of polls "stat" links participated by particular single user. But sometimes admin of site wants to know the inverse information: which polls were NOT participated (not voted) by particular user of the site. In such case instance of qp_UserPollsList is created with property $this->inverse = true; and then 'qp_voice_link_inv' message is being used to display link "User voice?" for each entry of QueryPage:
$voice_link = $this->qpLink( $this->getTitle(), wfMsg( 'qp_voice_link' . ( $this->inverse ? "_inv" : "" ) ), array(), array( "id" => intval( $result->pid ), "uid" => $this->uid, "action" => "uvote" ) );
The question mark "states" that user did not vote in particular poll, however by pressing the "inv" link admin may check whether this particular user voted the poll _after_ the qp_UserPollsList::getIntervalResults() was performed.
I feel very sad that currently I don't have the possibility to implement major changes I planned for this extension. It is especially sad because something like 90% of work is done, while about 10% only is left to release much improved and flexible version.