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"Repetitive Leaves" in RSF are a small exception to the rule that only branch tags (that is, those peering with [UIBranchContainer]) may be given colon IDs in the template. This is designed to streamline the quite common case where the material to be repeated consists only of a single primitive RSF component. A classic example is of a simple list of links - for example the following template segment

{{{

<a href="link1.htm" rsf:id="link:">Link 1</a>, <a href="link2.html" rsf:id="link:">Link 2</a>

}}}

can be rendered into a comma-separated list of links of any size, for example, with a loop like the following:

{{{

for(int i = 0; i < links.length; ++ i) {

UILink.make(tofill, "link:", linktext[i], links[i]);

}

}}}

This "shorthand" saves on constructing a UIBranchContainer for every iteration, as well as some redudant tags in the template in this simple case. Note that leaf components can ''not'' ordinarily be given colon {{rsf:id}}s except in this simple kind of case, unless of course they are being used in the role of being [seed components|SeedComponent] to an [Evolver].