UNICHAR Function [Visio 2003 SDK Documentation]
Returns the Unicode character from a number.
UNICHAR (number)
number An integer between 1 and 65,535 (inclusive), or the function returns an error.
Remarks
The resulting string is one Unicode character (two characters) in length. The UNICHAR function replaces the CHAR function in Microsoft Office Visio 2003.
Example
UNICHAR(65)
Returns A (Latin Capital Letter A)