iso Execution Mode Rules| quoted-name | ::= quoted-atom
 | |
| |  backquoted-atom
 | ||
| base-prefix | ::=   0b  | { indicates base  2 }
 | 
|  0o  | { indicates base  8 }
 | |
|  0x  | { indicates base 16 }
 | |
| char-item | ::= quoted-item
 | |
| other-escape-sequence | ::= x alpha... \  | {treating a,b,... and A,B,... as 10,11,... } in the range [0..15], hex character code }
 | 
|  o digit... \  | { in the range [0..7], octal character code }
 | |
| | <LFD> | { ignored }
 | |
|  \  | { stands for itself }
 | |
|  '  | { stands for itself }
 | |
|  "  | { stands for itself }
 | |
|  `  | { stands for itself }
 | |
| quoted-char | ::= <SPC>
 | |
| |  printing-char
    |