Only the mnemonics given in the table below are currently recognized:
0 nul 16 32 48 0 64 @ 80 P 96 ` 112 p
1 17 33 ! 49 1 65 A 81 Q 97 a 113 q
2 18 34 " 50 2 66 B 82 R 98 b 114 r
3 19 35 # 51 3 67 C 83 S 99 c 115 s
4 20 36 $ 52 4 68 D 84 T 100 d 116 t
5 21 37 % 53 5 69 E 85 U 101 e 117 u
6 22 38 & 54 6 70 F 86 V 102 f 118 v
7 bel 23 39 ' 55 7 71 G 87 W 103 g 119 w
8 bs 24 40 ( 56 8 72 H 88 X 104 h 120 x
9 ht 25 41 ) 57 9 73 I 89 Y 105 i 121 y
10 lf 26 sub 42 * 58 : 74 J 90 Z 106 j 122 z
11 27 esc 43 + 59 ; 75 K 91 [ 107 k 123 {
12 28 44 , 60 < 76 L 92 \ 108 l 124 |
13 cr 29 45 - 61 = 77 M 93 ] 109 m 125 }
14 30 46 . 62 > 78 N 94 ^ 110 n 126 "
15 31 47 / 63 ? 79 O 95 _ 111 o 127
For the rest, the numeric code should be used. It is also possible to use characters with codes from 128 to 255, but the graphic characters corresponding to those codes are system dependent. If the editor used allows it, graphic characters may be used for characters between 0 and 31, with the proviso that these are system dependent and may not be portable.