Example using Arial font "letter A with dot below"

Open MS WordPad (not Word)
   Set WordPad to Arial Font

Key Sequence:
   Set Numeric Num Lock = ON
   Hold down ALT key while pressing the following:
   Press Numeric Plus Sign key
   Press Numeric 7 key
   Press Numeric 8 key
   Press Numeric 4 key
   Press Numeric 1 key
   Set Numeric Num Lock = OFF

The above sequence can be programmed onto Martian Keyboard key
   for fast entry of the character.

Result:

Notes:
1. 7841 is the decimal value of the unicode character.

2. WordPad is one app that accepts the control sequence above.
   Other apps may use different methods , -should be googled for help.
   e.g. Result site: http://www.georgehernandez.com/h/xComputers/CharacterSets/Shortcuts.asp

3. 7841 was found by internet search: "letter A with dot below"
   Result site: http://www.fileformat.info/info/unicode/char/1ea1/index.htm

4. Many other fonts may also contain letter A with dot below.
   E.g. list is at: http://www.fileformat.info/info/unicode/char/1ea1/fontsupport.htm

5. Once you can control the unicode character in your document by manually
   typing the key sequence, then program the sequence into a Martian Keyboard key
   for simple single key press.

6. If you need a different font that contains the special characters you need, then
   there is a web site http://www.alanwood.net/unicode where there are many resources
   to understand unicode and download hundreds of free unicode fonts. 





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