Section "2.3.3 Outputs" <u>[here](https://sqlite.org/vtab.html)</u> says, "The information in idxNum and idxStr is arbitrary as far as the SQLite core is concerned. The SQLite core just copies the information through to the xFilter method. Any desired meaning can be assigned to idxNum and idxStr as long as xBestIndex and xFilter agree on what that meaning is." I suspect Mr. Jones has interpreted that language to be a meaningless variation on the truly opaque, void-pointer-referent theme seen in other SQLite interfaces. Perhaps the fragment "core just copies the information" needs to explain that the NUL-termination convention must be respected.