Glyph — Returns a special character (a 'glyph')
Returns a special character (a 'glyph') according to the symbol specified.
Not all UIs may be capable of displaying every glyph; if a specific UI doesn't support it, a textual representation (probably in plain ASCII) will be returned.
This is also why there is only a limited number of predefined glyphs: An ASCII equivalent is required which is sometimes hard to find for some characters defined in Unicode / UTF-8.
Please note the value returned may consist of more than one character; for example, Glyph( `ArrowRight ) may return something like "->".
If an unknown glyph symbol is specified, 'nil' is returned.