Where to change JRequest::getCmd('print') property in joomla?

Question

PHP

Found a piece of code that is responsible for displaying some html fragment
<?php if(!JRequest::getCmd('print')): ?>
<a class="k2Anchor" href="<?php echo $this->item-> link; ?>#startOfPageId<?php echo JRequest::getInt('id'); ?>">
<?php echo JText::_('K2_BACK_TO_TOP'); ?>
a>
<?php endif; ?>
Whether to output or not depends on what JRequest::getCmd('print') returns. I need to change JRequest::getCmd('print') via standard jooomla interface or via settings files, but I can't find where it all is. The code itself cannot be edited.