The value types recognized are string,
      localestring, regexp,
      boolean, and
      numeric.
    
	 Values of type string may contain all ASCII
	 characters except for control characters.
       
	 Values of type localestring are user displayable,
	 and are encoded in UTF-8.
       
	  Values of type boolean must either be the string
	  true or false.
       
	  Values of type numeric must be a valid floating
	  point number as recognized by the %f specifier for
	  scanf.
       
      The escape sequences \s, \n,
      \t, \r, and
      \\ are supported for values of type
      string and localestring, meaning
      ASCII space, newline, tab, carriage return, and backslash, respectively.
    
      Some keys can have multiple values. In such a case, the value of the key
      is specified as a plural: for example, string(s). The
      multiple values should be separated by a semicolon.  Those keys which
      have several values should have a semicolon as the trailing character.
      Semicolons in these values need to be escaped using
      \;.