This page queries for a matrix and formats the result using a LoopSet. The output is stored rather than being written back directly and then displayed using different tag. This is handy if you want to display the output more than once on the same page or pass the output as a Parameter inside another dxp tag.

A LoopSetIterator can also store output. To keep it interesting we'll group the data by person and create labels. If we want to display this output more than once it makes sense to store it rather than regenerate it. We can also store this as bytes which is more efficient to write out multiple time since it doesn't have to be converted from text each time it's written.

Here is the same byte data displayed in a slightly different format

Source