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On Sun, Feb 24, 2008 at 12:39 PM, Rick Jelliffe <rjelliffe@a...> wrote: > What is the difference between a document with multiple roots and a > document with a single root? One start tag and one end tag. In addition to Michaels logging use case another standard use case is dynamic aggregation of multiple resources for presentation where those multiple resources have different cache lifetimes. For example, consider a Web based editor; an initial request will require all resources. As editing proceeds individual resources will get invalidated and must be cycled through the back end. If you want to treat them consistently on the front you have to add the extra wrapping step even though it now adds no value what-so-ever. The alternative ends up being that AJAX style asynchronous requests for each resource and handling them individually. Once you've done that you might as well use JSON, then you don't have to worry about artificially packing up individual resources in the first place. One start tag and one end tag ends up hiding the fact that you have multiple resources in a single "package" (may not be a file) and requiring artificial work arounds that add no extra value but do cost processing resources.... -- Peter Hunsberger
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