▽THREE.OH - Digital Design Journal ●07/21 18:58 Over the years font formats have been dreamed about that would allow intelligent mutation of type. Apples fated GX fonts (now called AAT - Apple Advance Typography) are similar to Adobe’s Multiple Master technology. But AAT also allows for ’glyph substitution’ - we see this in some applications when typing f and i = 〓 ligature automatically. 20.19.18.17.16.15.14.13.12.11.10.9.8.7.6.5.4.3.2.1