Bitthai Script come with 530+ glyphs. The alternative characters were divided into several OpenType features such as Swash, Stylistic Sets, Stylistic Alternates, Contextual Alternates.
The OpenType features can be accessed by using Open Type savvy programs such as Adobe Illustrator, Adobe InDesign, Adobe Photoshop Corel Draw X version, and Microsoft Word. This Font has given PUA unicode (specially coded fonts) so that all the alternate characters can easily be accessed in full by a craftsman or designer