This deletes any tables of data.

None

This layer is normally used to remove any data remaining in a table before performing another query.

It's most often used when you want to get additional information after extracting data using a layer like valuesummary, which leaves the table of data in-place (unlike other layers like flatten and select, which erase it) before other layers are processed.

If the frame contains the following table of data…

{
   "type": "reset"
}

This removes the table from all of the current frames.