I have a checkbox form element that uses taxonomy terms via
#default_value; storing the result. I don't want to overwrite value, I just want the form to render/display checked initially.
$form['search_block_topic'] = array( '#type' => 'checkboxes', '#options' => $topic_options, '#default_value' => variable_get('search_topic_options', $topic_options)
'#return_value' => "checked"
which doesn't work.