I just can't get how to do this. When inserting a gallery I have this output:
<a href="path_to_files/image.jpg" title="fancy title">
<img width="150" height="150" src="path_to_files/image-150x150.jpg" class="attachment-thumbnail" alt="fancy alt"/>
</a>
But when inserting single images the title doesn't shows. How to fix that? It's not showing on default wp themes, which is strange.