You can enable/disable captions on almost all of our themes. ImNotWordy theme doesn't support captions.
Click 'Edit theme' button on your blog.
Find 'Use caption', and turn it on or off.
What's the different between 'Use caption' and 'Hide caption'?
We've received multiple inquires about those two options. We do believe the concepts are a bit confusing. So here's the explanation:
Use caption: Use caption hides your captions completely as well as buttons, notes, and dates on certain themes, but it doesn't hide it form your permalink page.
Hide caption: Hide caption hides your captions only. It doesn't hide any buttons, notes, and dates. It doesn't hide anything from your permalink page.