# Black Meridian System Documentation & Technical Reference > Black Meridian is an infinite 2D spatial AI workspace and non-linear visual logic board designed for academic researchers, strategy consultants, narrative designers, and prompt engineers. --- ## 1. System Architecture & Spatial Paradigm Black Meridian transforms generative AI interaction from single-threaded, 1-dimensional vertical chat scrolls into an unbounded 2-dimensional computational canvas. ### Core Architectural Primitives 1. **Cognitive Nodes**: Independent conversational and computational units operating with isolated local context windows. 2. **Context Cables**: Explicit visual connections establishing directed graph dependencies between notes, documents, and chat nodes. Context cables eliminate "Lost in the Middle" attention degradation by feeding only specified inputs into model payloads. 3. **Multi-Model Consensus**: Side-by-side concurrent execution of leading AI models across rapid ideation and deep reasoning tiers. 4. **Dialogue Branching (Fan-Out / Fan-In)**: Forking single conversations into parallel reality branches and synthesizing multi-branch conclusions into unified summary nodes. 5. **Semantic Edge Logic**: AI-interpreted edge relationships (`Contradicts`, `Supports`, `Synthesizes`, `Extrapolates`) that guide prompt synthesis and critical reasoning. 6. **Visual Zones**: Bounding containers that group nodes logically and visually. --- ## 2. AI Model Architectures & Processing Tiers - **High-Speed Exploratory Models**: Default fast conversational engine. Ideal for rapid brainstorming, ideation, and broad synthesis. - **Deep Reasoning Engine**: Advanced reasoning models specialized for academic literature analysis, code auditing, and multi-step logic verification. - **Multi-Modal Document Vision**: High-fidelity visual parsing and extraction for PDFs, schematics, and tabular data. --- ## 3. High-Value Persona Workflows ### 3.1 Academic Research & Literature Reviews - **Ingestion**: Drag and drop up to 40MB PDF papers directly onto canvas. - **Extraction**: Highlight methodology and empirical data into linked Sticky Notes. - **Contradiction Mapping**: Connect conflicting studies with `Contradicts` semantic edges. - **Synthesis**: Attach a deep reasoning Chat Node to reconcile conflicting empirical findings into peer-review ready literature review sections. ### 3.2 Strategic Scenario Planning & Red-Teaming - **Quadrant Mapping**: Organize strategic scenarios into visual SWOT quadrants. - **Divergent Generation**: Use high-speed models for optimistic scenario generation. - **Critical Red-Teaming**: Use advanced reasoning engines connected to scenario nodes with `Contradicts` edges to stress-test vulnerabilities and blind spots. - **Consensus Synthesis**: Synthesize into executive decision memos. ### 3.3 Creative Writing & Narrative Worldbuilding - **Character Lore Bibles**: Store character sheets and world rules in Visual Zones. - **Branching Dialogue Trees**: Fork story choices into parallel narrative timelines without cross-contaminating sibling branch context. --- ## 4. Keyboard Shortcuts & Canvas Controls - **Pan Canvas**: Middle-Click + Drag, Spacebar + Click + Drag, or Two-Finger Trackpad Swipe. - **Zoom Canvas**: Mouse Wheel or Pinch-to-Zoom. - **Spawn Chat Node**: Drag from HUD or click Chat Node in the Control Panel. - **Connect Nodes**: Drag from the port anchor on any node boundary to another node's port anchor. - **Label Edge**: Click on an edge connector line to set relationship semantics (`Supports`, `Contradicts`, `Synthesizes`). - **Auto-Tidy**: Trigger one-click layout optimization in HUD to align nodes into structured hierarchies. --- ## 5. Subscription Tiers & Capabilities - **Free Tier ($0)**: 1 active board, up to 30 nodes per board, standard high-speed AI models, text files up to 2MB. - **Pro Tier ($20/mo)**: Unlimited boards and nodes, advanced reasoning AI models, 40MB PDF & image uploads, unlimited branching/merging, visual zones, edge labels, board snapshots, auto-tidy. - **Max Tier ($45/mo)**: Bring Your Own Key (BYOK) API support, real-time multiplayer collaboration, custom node scripting, 1M+ token context windows. --- ## 6. Canonical URLs & Sitemaps - Homepage: https://meridian-black.com/ - Interactive Canvas Demo: https://meridian-black.com/demo - Canvas Documentation: https://meridian-black.com/instructions - Pricing Plans: https://meridian-black.com/billing - Academic Research Hub: https://meridian-black.com/use-cases/academic-research - Creative Writing Hub: https://meridian-black.com/use-cases/creative-writing-worldbuilding - Strategic Planning Hub: https://meridian-black.com/use-cases/strategic-scenario-planning - Compare vs ChatGPT: https://meridian-black.com/compare/black-meridian-vs-chatgpt - Compare vs Miro AI: https://meridian-black.com/compare/black-meridian-vs-miro-ai - Guide - Why ChatGPT Forgets: https://meridian-black.com/guides/why-chatgpt-forgets-long-threads - Articles Index: https://meridian-black.com/articles - Privacy Policy: https://meridian-black.com/privacy - Terms of Service: https://meridian-black.com/terms - Refund Policy: https://meridian-black.com/refund