load'html-tools.ijs '
   query 'QUERY_STRING'
+-----+-------+
|first|Jack   |
+-----+-------+
|mi   |E      |
+-----+-------+
|last |Howland|
+-----+-------+
   # 0{ 1{ query 'QUERY_STRING'
1
   1{ query 'QUERY_STRING'
+--+-+
|mi|E|
+--+-+
   # 0{ >1{ query 'QUERY_STRING'
2
   getenv
2!:5
   < ;. 1 ' now is the time to do'
+----+---+----+-----+---+---+
| now| is| the| time| to| do|
+----+---+----+-----+---+---+
   < ;. 2 'now is the time to do '
+----+---+----+-----+---+---+
|now |is |the |time |to |do |
+----+---+----+-----+---+---+
   < ;. _1 ' now is the time to do'
+---+--+---+----+--+--+
|now|is|the|time|to|do|
+---+--+---+----+--+--+
   < ;. _2 'now is the time to do '
+---+--+---+----+--+--+
|now|is|the|time|to|do|
+---+--+---+----+--+--+
   < ;. _2 (1 2 3 __ 4 5 __ 6 7 8 __)
+-----+---+-----+
|1 2 3|4 5|6 7 8|
+-----+---+-----+
   < ;. _2 (<1 2 3) , (<'fret') , (<'hi there') , <'fret'
+-------+----------+
|+-----+|+--------+|
||1 2 3|||hi there||
|+-----+|+--------+|
+-------+----------+
   (<1 2 3) , (<'fret') , (<'hi there') , <'fret'
+-----+----+--------+----+
|1 2 3|fret|hi there|fret|
+-----+----+--------+----+
   r =: getenv'QUERY_STRING'
   r
first=Jack&mi=E&last=Howland
   (, & '&') r
first=Jack&mi=E&last=Howland&
   (  < ;. _2 @ (, & '&'))r
+----------+----+------------+
|first=Jack|mi=E|last=Howland|
+----------+----+------------+
   (,&'=' &. >)@(  < ;. _2 @ (, & '&'))r
+-----------+-----+-------------+
|first=Jack=|mi=E=|last=Howland=|
+-----------+-----+-------------+
   (< ;. _2 &. >)@(,&'=' &. >)@(  < ;. _2 @ (, & '&'))r
+------------+------+--------------+
|+-----+----+|+--+-+|+----+-------+|
||first|Jack|||mi|E|||last|Howland||
|+-----+----+|+--+-+|+----+-------+|
+------------+------+--------------+
   >@(< ;. _2 &. >)@(,&'=' &. >)@(  < ;. _2 @ (, & '&'))r
+-----+-------+
|first|Jack   |
+-----+-------+
|mi   |E      |
+-----+-------+
|last |Howland|
+-----+-------+
   do '3+'
invalid J expresson
   do '3+4'
7
   htd =: 3 : ' 16 16 #. ''0123456789ABCDEF''i. y.'
   htd '2B'
43
   (htd '2B') { a.
+
   htd1 =: (16 16 & #.)@ ('0123456789ABCDEF'&i.)
   htd1 '2b'
48
   htd1 '2B'
43
   unmungle'2%2B3+%2B+4'
2+3+++4