• Metapolator architectural proposal
• An important note about the user interface and font commands
• A top-down overview
• UI
• Property Table Editor
• (abstract) Interactive Commands
• Interfaces to storage
• Separations of knowledge
• Major differences from existing code
• Building in Stages
• Stage 1: glyph-editor
• Stage 1.25: glyph-editor with undo / redo
• Stage 1.5: multi-buffer glyph editor
• Stage 2: "cascading" default properties
• Stage 2.5: synthetic tables / metapolation
• Stage 3: the mature metapolator
• Milestone 1: a glyph-editor
• Data Types
• Atoms
• Numbers, Strings, null, and Booleans
• Identifiers
• Immutable Composite Values
• Immutable Tuples
• Notation
• Pseudo-types
• Property Lists
• Glyph Sets
• Mutable Composite Types
• Codepoint Array
• Interactive Commands
• Simple commands
• Simple command calling convention
• Creating a new simple command
• Accessing a simple command
• Modal commands
• Modal command calling convention
• Repeated modal calls
• Recursive command invocation
• Conclusion