an class="comment">%     showCompressionDialog    X    If true (a non-zero number), a dialog</span>
0111 <span class="comment">%                                   box is presented to the user allowing</span>
0112 <span class="comment">%                                   precise manual selection of the codec</span>
0113 <span class="comment">%                                   and its parameters.  Note: sometimes</span>
0114 <span class="comment">%                                   the dialog does not re