[Typo3] lz-gallery: Caption setup

[Mark Gillingham]

I created an ext template and added the following Typ0Script to it. The 
directions says

"First, you'll have have to change the main template, more specifically 
the subpart “<!--###GALLERY_DEFAULT###-->” Make sure it contains both 
“###IMAGE### and ###SPLIT_1### are in that subpart, and you're all set!"

I don't know how to change this template (it's clear). I added a "value" 
to the Typ0Script as follows, but this adds nothing. How do I do this?

plugin.tx_lzgallery_pil.gallery {
   # all galleries (1x1, 2x2, 3x3 etc) default to this if they have no 
settings.
   default {
     # turn the first split, e.g., the title on
   1 = 1
     # and wrap it in a div so we can use stylesheets!
     1.stdWrap.wrap = <div class="plugin.tx-lzgallery-pi1-default-1">|</div>
   }

   value {
   <!--###GALLERY_DEFAULT### begin-->
   <!--###IMAGE### begin-->&nbsp;<!--###IMAGE### end-->
   <!--###SPLIT_1### begin--> &nbsp; <!--###SPLIT_1### end-->
   <!--###GALLERY_DEFAULT### end-->
}