GC Gstarcademy

Terms & Semantic Index

Click on any concept to view its detailed atomic knowledge page. These concepts are mapped as nodes in our interactive Knowledge Graph.

Glossary Starter (Highlighted Terms)

BEGINNER / 2D

Layer

A logical container controlling visibility, color, line type, and plotting behavior.

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BEGINNER / 2D

Block

Reusable grouped geometry, often used for symbols and repeated components.

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BEGINNER / AEC

Xref

External reference file linked into a drawing for collaboration across teams.

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3D / BEGINNER

Constraint

Rules in sketch/model that lock geometry relationships and design intent.

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STANDARDS / COLLABORATION

Tolerance

Allowed dimensional variation for manufacturing and assembly acceptance.

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AEC / 3D

BIM

Building Information Modeling: data‑rich model approach for AEC lifecycle workflows.

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2D / MFG

DWG compatibility mode

How a CAD platform reads/writes Autodesk‑style DWGs—fonts, substitutes, proxies, scale lists.

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2D / MFG

Command alias (PGP)

Keyboard shortcuts to commands—the muscle memory bridge when moving between DWG editors.

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MFG

Mechanical BOM

Bill of materials generated from parts lists in mechanical verticals—ties annotations to rows and quantity fields.

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3D

Point cloud (scan)

Dense 3D measurement points from LiDAR/photogrammetry used for as‑builts and clash context.

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AEC

AEC object style

Wall/slab/stair styles in architectural verticals—parameters drive plan/elevation behavior like a lightweight BIM‑lite.

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BEGINNER

SYSVAR

System variables controlling snaps, file paths, user preferences—think global toggles with saved profiles.

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Software-specific terminology

448 terms · authored & reviewed by Gstarcademy editors

Atomic concepts broken out per CAD product family. Each links to a dedicated page with definition, why-it-matters, common pitfalls, and sources.

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Letter P

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Letter X

Software-specific terminology

448 terms · authored & reviewed by Gstarcademy editors

Atomic concepts broken out per CAD product family. Each links to a dedicated page with definition, why-it-matters, common pitfalls, and sources.

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A

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C

D

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FILEDIA System Variable & File Dialog Box Control CMDDIA System Variable & Command Dialog Control ATTREQ & ATTDIA Block Attribute Prompt Controls PICKFIRST System Variable & Noun/Verb Selection MBUTTONPAN System Variable & Mouse Wheel Panning VISRETAIN System Variable & Xref Layer Overrides INSUNITS, INSUNITSDEFNAME & Insertion Units Scaling DIMASSOC System Variable & Associative Dimensions TEXTFILL System Variable & TrueType Font Outline Rendering MIRRTEXT System Variable & Mirrored Text Legibility Trochoidal Milling & High-Efficiency Adaptive Clearing RTCP & TCPC 5-Axis Rotational Tool Center Point Control Cutter Radius Compensation (G41, G42 & G40) Scallop Cusp Height & CAM Stepover Optimization 5-Axis Swarf Milling for Ruled Surfaces & Structural Ribs Maximum Material Condition (MMC) & Bonus Tolerance Least Material Condition (LMC) & Wall Thickness Protection Composite Positional Tolerancing & Pattern Control Datum Reference Frame (DRF) & 3-2-1 Fixturing Rule Surface Roughness: Ra vs Rz Parameters & Drawing Symbols AI-Driven Generative Design & Structural Synthesis Scan-to-BIM & Point Cloud Semantic Segmentation Digital Twin Asset Lifecycle Governance (ISO 55000 & BIM) IFC 4.3 openBIM Infrastructure Extension Standard Model View Definitions (MVD) & IDS Specification BCF 3.0 (BIM Collaboration Format) & Issue Tracking von Mises Yield Criterion & Ductile Material Failure Theory CFD y+ (y-Plus) & Near-Wall Boundary Layer Resolution Modal Participation Factor & Dynamic Effective Mass Rainflow Cycle Counting in Mechanical Fatigue Analysis Virtual Condition & Maximum Material Boundary (MMB) per ASME Y14.5 Profile of a Surface & Line Tolerancing per ISO 1101 & ASME Y14.5 ISO 21920 Surface Texture Standard: 3D Areal Parameters (Sa, Sq, Sz) Datum Shift & Functional Fixture Gage Design per ASME Y14.5 Screw Thread Runout, Pitch Diameter & Functional Gaging per ASME B1.1 Involute Gear Profile Shift Coefficient (x) & Undercut Prevention Johnson-Cook Constitutive Model for High-Strain Dynamic Plasticity Linear Elastic Fracture Mechanics (LEFM): Stress Intensity Factor (K) & Fracture Toughness FEA Shear Locking & Hourglassing: Numerical Remedies in Solid Elements Rainflow Cycle Counting per ASTM E1049 & Miner's Fatigue Damage Rule Non-Equilibrium Wall Functions in CFD for Adverse Pressure Gradient Separation Turbulent Prandtl (Prt) & Schmidt (Sct) Numbers in Heat & Species Transport VOF Surface Tension & Continuum Surface Force (CSF) Model Spurious Currents Thermal Contact Resistance (TCR) & Contact Conductance in FEA Modal Effective Mass Participation & Structural Truncation per ASCE 7 BCF 3.0 REST API: Cloud Collaboration Architecture & Issue Synchronization STEP AP242 Schema: Semantic Product & Manufacturing Information (PMI) Spatial Indexing in CAD Engines: R-Tree & Bounding Volume Hierarchies (BVH) B-Rep Solid Modeling Topology: Euler-Poincaré Formula & Manifold Validity AutoLISP ActiveX/COM Automation: VLA Object Model & Memory Management LTSCALE, PSLTSCALE & MSLTSCALE Linetype Scaling Governance PICKADD System Variable & Cumulative Entity Selection OSMODE System Variable & Object Snap Bitcode Reference EDGEMODE & PROJMODE Trim/Extend Virtual Intersection Control PLINEGEN System Variable & Polyline Vertex Linetype Generation WHIPTHREAD Multi-Core Display Regeneration & Redraw Threading INDEXCTL Spatial & Layer Indexing for Demand-Loaded Xrefs XLOADCTL External Reference Demand Loading & File Locking PROXYGRAPHICS, PROXYNOTICE & Custom Object ARX/GRX Display ANNOALLVISIBLE & SELECTIONANNODISPLAY Annotative Visibility HQGEOM, LINESMOOTHING & Hardware Graphics Pipeline Variables ISAVEPERCENT & ISAVEBAK DWG Incremental Save Optimization MEASUREMENT & MEASUREINIT ISO vs ANSI Hatch/Linetype Registry ANGBASE, ANGDIR & Civil Surveying Azimuth Angle Orientation EXPERT, CMDECHO & NOMUTT Batch Script Prompt Suppression PURGE & -PURGE Command: Stripping RegApps & Zero-Length Geometry OVERKILL Command: Automated Vector Deduplication & CNC Path Cleanup AUDIT & RECOVER Commands: AcDbObject Handle & Symbol Table Repair ETRANSMIT Command: Transmittal Packaging for Xrefs, CTBs & SHX Fonts DATAEXTRACTION Command: Extracting Block Attributes to Excel & BOMs LAYTRANS Command: Automated Client-to-ISO 13567 Layer Mapping FLATTEN Command: Projecting 3D Non-Coplanar Entities to Z=0 Elevation BURST vs EXPLODE Command: Preserving Resolved Block Attribute Values CHSPACE Command: Bi-Directional Viewport Entity & Scale Transfer ALIGN Command: 2-Point and 3-Point Euclidean Transformation & Scaling JOIN & PEDIT Commands: Converting Disjoint Segments to Closed Polylines BOUNDARY (BPOLY) & REGION Commands: Topological Loop Detection WBLOCK Command: Deep-Cloning Entities to Clean Seed DWG Databases OOPS vs UNDO Command: Restoring Last Erased Selection Set SELECTSIMILAR, QSELECT & FILTER: Boolean Entity Querying SCALELISTEDIT Command: Purging Bloated Annotative Scale Dictionaries XCLIP & VPCLIP Commands: Inverted Clipping & Spatial Framing FIELD Command: Dynamic Diesel Expressions & Sheet Set Property Tokens PUBLISH & SSM Commands: Multi-Core Background Batch PDF Plotting DXFOUT & DXFIN Commands: ASCII Group Code Inspection & Interoperability DWGCOMPARE in GstarCAD: Cloud-Anchored Geometric Revision Diffing GRAPHICCOMPARE in GstarCAD: High-Speed Raster/Vector Overlay Inspection AUTOXLSTABLE & CAD2XLS: Bi-Directional Excel Spreadsheet Synchronization AREATABLE in GstarCAD: Dynamic Room, Parcel & Hatch Area Quantification PDFIMPORT in GstarCAD: TrueType Text & Vector Geometry Reconstruction QRCODE & BARCODE in GstarCAD: Automated PLM/ERP Drawing Tracking SUPERHATCH in GstarCAD: Architectural Texture & Custom Block Tiling INCREMENT & AUTONUM in GstarCAD: Sequential Tag & Terminal Numbering LAYOUTBYPATH in GstarCAD: Automated Viewport Generation Along Alignments GstarCAD Mechanical BOM & Balloons: ISO/DIN Part Reference Automation GstarCAD Mechanical Generators: Parametric Shaft, Gear & Bearing Design GstarCAD Mechanical Hole Charts: Automated ISO 286 Fits & CNC Coordinate Tables GstarCAD Architecture Wall/Door/Window: Associative 2D/3D AEC Objects GstarCAD Architecture Sections & Schedules: Live Building Cut Generation DWG FastView Cloud Markups: Field Redlining, Voice Notes & Offline Sync