[Jgeneral] dfns can't be followed by . :. ::

[Julian Fondren]

In J902 and J903:

   v =: (3 : 'y') :. (3 : 'y')
   v =: {{ y }} :. {{ y }}
|spelling error
|   v =: ( 9 : 'y '):. ( 9 : 'y ')
|
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