ANSI ASCII/IBM ASCII:
 
ANSI ASCII  is the character set used in  Windows  applications.
It is standardized by the American National Standards Institute.

MS-DOS uses the IBM ASCII character set. This set is also called
the OEM character set.

These character sets differ in the second half, containing char-
acters with a ASCII values greater than 127.

The first 32 ASCII values are not printable characters, they are
control codes:

Hex Asc  Control Code              Abbr.
--- ---  ------------------------- -----
0   0    Null                      nul
1   1    Start of Header           soh
2   2    Start of Text             stx
3   3    End of Text ' control-c   etx
4   4    End of Transmission       eot
5   5    Enquiry                   enq
6   6    Acknowledge               ack
7   7    Bell                      bel
8   8    Backspace                 bs
9   9    Horizontal Tab            tab
A   10   Line Feed                 lf
B   11   Vertical Tab ' control-k  vt
C   12   Form Feed                 np
D   13   Carriage Return           cr
E   14   Shift Out                 so
F   15   Shift In                  si
10  16   Data Link Escape          dle
11  17   Device Control 1 (Xon)    dc1
12  18   Device Control 2          dc2
13  19   Device Control 3 (Xoff)   dc3
14  20   Device Control 4          dc4
15  21   Negative Acknowledge      nak
16  22   Synchronous Idle          syn
17  23   End of Transmission Block etb
18  24   Cancel                    can
19  25   End of Medium             em
1A  26   Substitute                eof
1B  27   Escape                    esc
1C  28   File Separator            fs
1D  29   Group Separator           gs
1E  30   Record Separator          rs
1F  31   Unit Separator            us

BASIC Unprintables (Ascii): 0, 7 to 13, 26 to 31.

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