CHARPIX()
 Returns the number of pixel lines per character
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 Syntax

     CHARPIX() --> nPixelline

 Returns

     CHARPIX() returns a value that corresponds to the number of pixel lines
     per character.

 Description

     Different screen adapters build characters from a different numbers of
     pixel lines.  Based on the installed mode, the number of pixel lines for
     a particular type of screen adapter may also vary.

     Use CHARPIX() to determine the number of pixel lines available in the
     currently installed mode.  This information is useful when used in
     conjunction with SETCURSOR().

 Example

     Display the number of pixel lines:

     ? CHARPIX()         // VGA, no mode change - 16