Representation 5!:

x 5!:0 Define. 5!:0 is an 副詞與提供s a complete inverse of 5!:1. 亦即, (5!:1 <'f') 5!:0 equals f for all f .
 
5!:1 y 原子ic. 原子ic representation of entity named y and is used in 動名詞s. result is a single box containing a character list of 符號 (if 基本單字) or a two-分子 boxed list of 符號 and 原子ic representation of 引數(if not 基本單字). "符號-less" entities are assigned following encodings:

0  Noun
2  Hook
3  Fork
4  Bonded 連接詞
5  雙叉族
6  三叉族
7  Defined operator (pro-副詞 or pro-連接詞)

例如:
   Plus=: +
   5!:1 <'plus'
+-+
|+|
+-+
   名詞=: 3 1 4 1 5 9
   5!:1 <'名詞'
+---------------+
|+-+-----------+|
||0|3 1 4 1 5 9||
|+-+-----------+|
+---------------+
   增值=: 1&+
   5!:1 <'增值'
+-------------+
|+-+---------+|
||&|+-----+-+||
|| ||+-+-+|+|||
|| |||0|1|| |||
|| ||+-+-+| |||
|| |+-----+-+||
|+-+---------+|
+-------------+
5!:2 y Boxed.
   nub=: (i.@# = i.~) # ]
   5!:2 <'nub'
+-------------------+-+-+
|+--------+-+------+|#|]|
||+--+-+-+|=|+--+-+|| | |
|||i.|@|#|| ||i.|~||| | |
||+--+-+-+| |+--+-+|| | |
|+--------+-+------+| | |
+-------------------+-+-+
5!:4 y Tree. A literal 矩陣that represents named entity in tree form. Thus:
   5!:4 <'nub'
            +- i.
      +- @ -+- # 
  +---+- =       
  |   +- ~ --- i.
--+- #           
  +- ]
5!:5 y Linear. linear representation is a string which, when interpreted, produces named object. 例如:
   5!:5 <'nub'
(i.@# = i.~) # ]

   5!:5 <'a' [ a=: o. i. 3 4
3.14159265358979324*i.3 4

   lr=: 3 : '5!:5 <''y.'''
   lr 10000$'x'
10000$'x'
5!:6 y Paren. Like linear representation, but is fully parensized.
   5!:6 <'nub'
((i.@#) = (i.~)) # ]
For all but 名詞 case, default displays established by 9!:3 提供convenient experimentation with all representations. 例如, 9!:3 (6 4 2) specifies that paren, tree,與boxed representations are all to be displayed.


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