(id "#!")
(description "Identifier follows [R6RS+]; Unix script [SRFI 22]")

(id "#\"")
(description "Interpolated string [Gauche]")

(id "#'")
(description "Syntax datum [R6RS, syntax-case]")

(id "#(")
(description "Vector [R7RS]")

(id "#*")
(description "Incomplete string [Gauche]")

(id "#,")
(description "unsyntax [R6RS, syntax-case]; Reader constructor [SRFI 10]")

(id "#,@")
(description "unsyntax-splicing [R6RS, syntax-case]")

(id "#/")
(description "Regular expression [Gauche]")

(id "#:")
(description "Keyword object [Chicken, Guile, S7]; Keyword marker [Kawa, Racket]; Uninterned symbol [Gauche]")

(id "#;")
(description "S-expression comment [R6RS, R7RS, SRFI 62]")

(id "#<...>")
(description "Unreadable object [Gauche]")

(id "#<n>#")
(description "Datum reference [R7RS]")

(id "#<n>=")
(description "Datum label [R7RS]")

(id "#?")
(description "Debug macro [Gauche]")

(id "#[")
(description "Character set [Gauche]")

(id "#\\")
(description "Literal character [R2RS+]")

(id "#`")
(description "quasisyntax [R6RS, syntax-case]; legacy interpolated string [Gauche]")

(id "#|...|#")
(description "Block comment [R6RS, R7RS, SRFI 30]")

(id "#b")
(description "Binary integer [R2RS+]")

(id "#d")
(description "Decimal number [R2RS+]")

(id "#e")
(description "Exact number [R2RS+]")

(id "#f")
(description "Boolean false [R3RS+]")

(id "#false")
(description "Boolean false [R7RS]")

(id "#i")
(description "Inexact number [R2RS+]")

(id "#o")
(description "Octal integer [R2RS+]")

(id "#t")
(description "Boolean true [R3RS+]")

(id "#true")
(description "Boolean true [R7RS]")

(id "u8(...)")
(description "Bytevector [R7RS]")

(id "vu8(...)")
(description "Bytevector [R6RS]")

(id "#x")
(description "Hexadecimal integer [R2RS+]")