8.18
5.13 禾🔗ℹ 
Racket’s Procedures is especially called 禾 in Ming.
5.13.1 禾、禾?🔗ℹ 
禾  connotation : procedure
  originates from : 
程  originally means : journey, progress
 
5.13.2 入、🔗ℹ 
Examples:
| > (入 () 空) | 
| #<procedure> | 
| | > (名 fun |  | ( [() #f] |  | [(x) x] |  | [(x y) ( x y)] |  | [(x y z) ( x y z)])) | 
 | 
| > (fun) | 
| #f | 
| > (fun 1) | 
| 1 | 
| > (fun 1 2) | 
| '(1 2) | 
| > (fun 1 2 3) | 
| '#(1 2 3) | 
5.13.3 ,🔗ℹ 
Examples:
| > ((  分) '("a" "b" "c") 2) | 
| : undefined; | 
|  cannot reference an identifier before its definition | 
|   in module: top-level | 
| > (( 句化 ) '("a" "b" "c")) | 
| : undefined; | 
|  cannot reference an identifier before its definition | 
|   in module: top-level | 
5.13.4 🔗ℹ 
Example:
| > ((  '1) 'a 'b 'c 'd) | 
| '(a b c d) | 
5.13.5 Base References🔗ℹ 
入 λ   connotation : lambda
  originates from : 
入  originally means : entrance, get in
 Implies the input data is procedure instead of normal data.
Examples:   攸/入.
名  connotation : define
  originates from : 
名  originally means : name
 
令  connotation : let
  originates from : 
令  originally means : let, order
 5.13.6 Additional References🔗ℹ