Hi, I have found a mistake on this page:

https://code.jsoftware.com/mediawiki/index.php?title=Vocabulary/JayTaster&oldid=29568

IN the section 'Pulling items from a list', in the second code box:

   index=: {

   1 index PROPS     NB. no, not the first item, but the second.
+----+
|mass|
+----+

   1 index PLANETS
jupiter 317.8  11.21  1321   11.86  0.414

1 index PROPS is *not* 'mass' but 'a'

so either mass needs to become a or the line needs to be

    1 index ;: PROPS

I'd make the correction but I am not sure which way to go! I suspect the
latter based on the comment. If that's correct then I will make the edit or
somebody else can.
Another wrinkle bites the dust.
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