<H1>Test page H1

<h1>Test page h1

<H2>Test page H2

<h2>Test page h2

<H3>Test page H3

<h3>Test page h3

<H4>Test page H4

<h4>Test page h4

<H5>Test page H5
<h5>Test page h5
<H6>Test page H6
<h6>Test page h6

ASCII codes for regular alphabet:

Decimal values of upper case ASCII characters
6....7....7....8....8....9....9....
5    0    5    0    5    0    5
ABCDEFGHIJKLMNOPQRSTUVWXYZ

Decimal values of lower case ASCII characters
9...10...10...11...11...12...12....
5    0    5    0    5    0    5
  abcdefghijklmnopqrstuvwxyz

ASCII control characters include:

^@      Ctrl+@ null character    NUL \0 0x00 octal 00 decimal  0
        Ctrl+I horizontal tab    HT  \t 0x09 octal 11 decimal  9
^J      Ctrl+J line feed         LF  \n 0x0A octal 12 decimal 10
^K      Ctrl+K
^L      Ctrl+L form feed         FF  \f 0x0C octal 14 decimal 12
^M      Ctrl+M carriage return   CR  \r 0x0D octal 15 decimal 13

Here there are THREE NULs >< coded as:

Here there are THREE NULs >^@^@^@<

Here there are THREE Ctrl+M> <
coded as:

Here there are THREE Ctrl+M>^M^M^M<.

Neither special character will show in "View Source" in your browser.