Character set display test

This page presents various versions of character displays for the purposes of
a) studying how various characters display in Web browsers, especially as affected by various "charset" settings; b) testing how to obtain certain desired characters in a display

Raw data - PC

The following text block was imported directly from a PC file: 
Character data according to Alt-# method of entry on a PC:

     0   1   2   3   4   5   6   7   8   9
00     
01      (control chars: 000 to 031)
02
03          spc  !   "   #   $   %   &   '
04   (   )   *   +   ,   -   .   /   0   1
05   2   3   4   5   6   7   8   9   :   ;
06   <   =   >   ?   @   A   B   C   D   E
07   F   G   H   I   J   K   L   M   N   O
08   P   Q   R   S   T   U   V   W   X   Y
09   Z   [   \   ]   ^   _   `   a   b   c
10   d   e   f   g   h   i   j   k   l   m
11   n   o   p   q   r   s   t   u   v   w
12   x   y   z   {   |   }   ~         
13                              
14                              
15                              
16                              
17                              
18                              
19                              
20                              
21                              
22                              
23                              
24                              
25
When editing either the present file or the original file with BBEdit on a Mac9600, the following obvious anomalies appear above (default font Monaco 14):
  127 - character disappears; those to its right are left-shifted one space
  217 - character appears with wrong glyph for the display font
  218-254 - all appear as rectangular blocks, even though a glyph is available for each of these characters in the display font
  255 - appears as rectangular block at beginning of next line

Other anomalies are likely to appear in a Web browser if the default fixed-width font for the browser does not contain glyphs for all 224 non-control characters.

When viewing this file as "local" in NN4.08/Mac, all code points from 033 to 126 inclusive (=USASCII) display identically to the BBEdit view; cp127= space, cp128 through 254 all have glyphs which are either (a) different from those associated with the Mac character set, (b) the same as the Mac character set, or asterisked (11 positions); and cp255 is blank. Apparently NN4 is doing an internal translation of the "extended ASCII" characters.

Decimal versus hexadecimal code point values

The following text block was locally generated in BBEdit, and shows the hexadecimal values corresponding to each decimal code point: 
     0   1   2   3   4   5   6   7   8   9
00  $00 $01 $02 $03 $04 $05 $06 $07 $08 $09
01  $0A $0B $0C $0D $0E $0F $10 $11 $12 $13
02  $14 $15 $16 $17 $18 $19 $1A $1B $1C $1D
03  $1E $1F $20 $21 $22 $23 $24 $25 $26 $27
04  $28 $29 $2A $2B $2C $2D $2E $2F $30 $31
05  $32 $33 $34 $35 $36 $37 $38 $39 $3A $3B
06  $3C $3D $3E $3F $40 $41 $42 $43 $44 $45
07  $46 $47 $48 $49 $4A $4B $4C $4D $4E $4F
08  $50 $51 $52 $53 $54 $55 $56 $57 $58 $59
09  $5A $5B $5C $5D $5E $5F $60 $61 $62 $63
10  $64 $65 $66 $67 $68 $69 $6A $6B $6C $6D
11  $6E $6F $70 $71 $72 $73 $74 $75 $76 $77
12  $78 $79 $7A $7B $7C $7D $7E $7F $80 $81
13  $82 $83 $84 $85 $86 $87 $88 $89 $8A $8B
14  $8C $8D $8E $8F $90 $91 $92 $93 $94 $95
15  $96 $97 $98 $99 $9A $9B $9C $9D $9E $9F
16  $A0 $A1 $A2 $A3 $A4 $A5 $A6 $A7 $A8 $A9
17  $AA $AB $AC $AD $AE $AF $B0 $B1 $B2 $B3
18  $B4 $B5 $B6 $B7 $B8 $B9 $BA $BB $BC $BD
19  $BE $BF $C0 $C1 $C2 $C3 $C4 $C5 $C6 $C7
20  $C8 $C9 $CA $CB $CC $CD $CE $CF $D0 $D1
21  $D2 $D3 $D4 $D5 $D6 $D7 $D8 $D9 $DA $DB
22  $DC $DD $DE $DF $E0 $E1 $E2 $E3 $E4 $E5
23  $E6 $E7 $E8 $E9 $EA $EB $EC $ED $EE $EF
24  $F0 $F1 $F2 $F3 $F4 $F5 $F6 $F7 $F8 $F9
25  $FA $FB $FC $FD $FE $FF
Notes:
  032 = "spc" = space   127 = "ctl" = some unknown control character

This page was created 2004/01/07 and last revised 2004/01/11.

Please send comments or questions to csz_stl@swbell.net