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Import Errors File not found Invalid TatML in imported file Circular import dependencies Pattern name conflicts Reference Errors Undefined pattern references Invalid cross-pattern element access Connection point mismatches

Reusable Motif Definition // File: motifs/flower_center.tatml pattern "Flower Center" { thread: size20 center_ring: R(4, p:n, 4, p:ne, 4, p:e, 4, p:se, 4, p:s, 4, p:sw, 4, p:w, 4, p:nw, 4) } Pattern Using Motifs // File: garden_doily.tatml...

Parser Requirements Module system for import resolution Symbol table with namespace support Cross-reference validation Dependency graph management Pattern Library Management File system integration Pattern caching Version compatibility checking ...

Basic Pattern Structure pattern "Pattern Name" { thread: size20, white shuttles: 1 element_id: ELEMENT_TYPE(stitches) } Elements Element Syntax Example Ring R(stitches, p, stitches) ring1: R(6, p, 6, p, 6) Chain...

What You'll Learn By the end of this tutorial, you'll know how to: Write basic TatML patterns Use precise picot referencing Validate patterns for errors Generate text instructions and diagrams Prerequisites Basic understanding of tatting (rings, c...

Let's start with the simplest possible pattern - a single ring. Step 1: Create the Pattern File Create a new file called first_ring.tatml: pattern "My First Ring" { thread: size20, white shuttles: 1 ring1: R(6, p, 6, p, 6) } Step 2: U...

Now let's connect our ring to a chain. Step 1: Update the Pattern Modify first_ring.tatml: pattern "Ring and Chain" { thread: size20, white shuttles: 1 ring1: R(6, p, 6, p, 6) chain1: C(8, join(ring1.picot1), 8, p, 8) } Step 2: U...

Let's create a complete motif with multiple elements. Step 1: Plan the Pattern We'll create: A center ring with 4 picots Four petal rings, each joining to one picot of the center Chains connecting the petals Step 2: Write the Pattern Create simple_m...

Let's create a two-shuttle pattern for color contrast. Step 1: Two-Shuttle Syntax Create two_shuttle.tatml: pattern "Two Color Flower" { thread: size20, blue shuttles: 2 shuttle1 { // Blue thread - center and structure ...

Let's intentionally create errors to see how TatML helps you fix them. Step 1: Create a Pattern with Errors Create buggy_pattern.tatml: pattern "Buggy Pattern" { ring1: R(5, p, 5) chain1: C(6, join(ring1.picot3), 6) // Error: ring1 only has 1 pic...

Use Descriptive Names // Good - clear purpose center_ring: R(6, p, 6, p, 6, p, 6) petal1: R(4, p, 4, join(center_ring.picot1), 4, p, 4) // Less clear ring1: R(6, p, 6, p, 6, p, 6) ring2: R(4, p, 4, join(ring1.picot1), 4, p, 4) Name Important Picots /...

Now that you understand TatML basics, you can: Explore Advanced Features Pattern imports and reusable motifs Repeat blocks for symmetric patterns Complex multi-shuttle coordination Use TatML Tools Generate different instruction formats Create ...

Mock Rings For advanced techniques, use mock rings that don't close: mock1: MR(4, p, 4, p, 4) chain1: C(6, join(mock1.picot1), 6) Picot Variations Specify different picot types and sizes: ring1: R(4, p, 4, sp, 4, lp, 4, jp, 4) ring2: R(5, p("5mm"), 5, s...

Primary Goal Create a markup language that solves the precise picot referencing and complex join notation problems identified in existing tatting notation systems. Target Users Pattern Designers - Need precise, unambiguous notation for complex patterns A...

Basic Structural Elements Rings (R) - closed loops of stitches Chains (CH/C) - open sequences of stitches Split Rings (SR) - rings made with two threads Mock Rings (SCMR) - self-closing mock rings Stitch Types Double Stitches (ds) - basic tatting s...

Precise Element Identification User Story As someone reading or creating tatting patterns using TatML, I want every ring and chain to have a unique identifier so that complex patterns don't fall victim to the ambiguity introduced by a volume of multiple ring...

Version 0.1.2 (Current) Basic rings, chains, picots, joins Mock rings (MR) - self-closing rings that don't actually close Picot variations - small (sp), large (lp), joining (jp) picots Picot length specifications - p("5mm"), sp("1/4\"") Element ID syste...

Syntax Design Goals Human readable - tatters can read raw TatML Machine parseable - tools can validate and process Extensible - new elements can be added Compact - not overly verbose for simple patterns Intuitive numbering - 1-based indexing throughout ...

Version 0.1.2 Goals (Completed) Can represent a simple ring-and-chain pattern Precise picot referencing works correctly Mock rings supported for advanced techniques Picot variations (small, large, joining) supported Picot length specifications work corr...