The core theoretical mechanism involves the utilization of **Glyph Variants** and **Stylistic Sets**, which are alternative character forms embedded within font files to provide contextual or stylistic substitutions beyond standard Unicode code points. This concept operates under the rule that typographic logic is encoded via specific instructions in OpenType features, allowing software applications like macOS Font Panels to map characters dynamically based on surrounding context (e.g., following a lowercase 'h') without requiring manual text selection during typing. Within computer typography and font engineering, this mechanism serves as a formalization of calligraphic rules by mapping alternative glyph subsets to specific character sequences or stylistic classes via predefined feature tags in the font metadata structure.
The core theoretical mechanism involves the utilization of **Glyph Variants** and **Stylistic Sets**, which are alternative character forms embedded within font files to provide contextual or stylist…