How do I set up the 'not pictured' text to display in my template?

Hi all,

I am trying to work out how where the code is within netsuite's themes and templates that displays the text such as 'not pictured' if we haven't uploaded an image for that item.  I've found that it's within the standard items/ categories layout, but it's not pointing to any templates!!!!

Is there an option to enable the text to display 'not pictured' anywhere within the webstore setup? Either i'm missing it, or I need to include some netsuite tags.  I presume it'll involve an if or else statement in the template somewhere.

Thanks in advance,
Gaz