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)

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Layer

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

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Block

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

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Xref

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

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Constraint

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

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Tolerance

Allowed dimensional variation for manufacturing and assembly acceptance.

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BIM

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

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DWG compatibility mode

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

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Command alias (PGP)

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

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Mechanical BOM

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

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Point cloud (scan)

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

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AEC object style

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

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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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