navigation - When creating a nav in SilverStripe, what is the number after $Menu? -


the below template code 1 of tutorials on official silverstripe website ("how create navigation menu") includes template variable $menu(1)

what (1) mean? happens if gets changed else?

<ul>     <% loop $menu(1) %>         <li>             <a href="$link" title="go $title page" class="$linkingmode">                 $menutitle             </a> ... </ul>

from docs

<% loop $menu(1) %> begins loop through menu items, repeating html in loop each one. passing (1) argument, asking cms give pages @ level 1 of hierarchy. changing (2) give pages @ second level of hierarchy in current section, , on.

that's taken video tutorials have now


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