One way is:

   ('';0;1;0 1){&.>  <'ab'
++-+-+--+
||a|b|ab|
++-+-+--+

--
David Mitchell

Tracy Harms wrote:
&nbsp;&nbsp; '';0;1;0 1&nbsp;&nbsp; NB. example boxlist
++-+-+---+
||0|1|0 1|
++-+-+---+
&nbsp;&nbsp; '';'a';'b';'ab'&nbsp;&nbsp; NB. desired output given 'ab' and 
boxlist
++-+-+--+
||a|b|ab|
++-+-+--+

I've tried a variety of combinations of { (from) with &amp;.&gt; (each) without 
grasping a correct combination.&nbsp; Advice is welcome.

Tracy




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