Thanks. I recall hitting 'autovivification' in the Alpaca book and coming away babbling of sentient Froot Loops smoking Meerschaum pipes, since I could make neither head nor tail of it ... I think I posted something about this some time ago, here on PM.
I look at it now and I can kinda wrap my mushy brain around it. I don't think this has to do with the Alpaca book being opaque (I need to go back to it, probably), but is perhaps a measure that even _I_ have learned something ... :)
In this case $DATA is a reference to an HoHoA, right?
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