Documentation

Getting Started

Open your first PDF, find the toolbars, and learn how the LocusBIM workspace fits together for PDF markup and 3D coordination.

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Getting Started

LocusBIM's PDF Markup engine lets you annotate construction and engineering drawings directly within the app, without leaving your BIM workflow.

Opening a PDF

Use File → Open PDF… (Ctrl+Shift+O) or click the Open PDF button in the toolbar. A native file picker opens; select any PDF file. The document renders at fit-width zoom automatically.

Navigating Pages

Use the Navigation toolbar: click ◄ ► to move between pages, type a page number directly, or use the Fit Width / Fit Page buttons to adjust zoom.

Switching Between 3D and PDF

Click 3D Viewer or PDF Markup in the top tab bar to switch between views. Click Split to show both side by side with a draggable divider — useful when cross-referencing a floor plan against the 3D model. See Section 18: Workspace Layout for details.

Tip: Right-click any markup on the canvas to link it to a 3D element, or use the sidebar to filter and manage all markups on the current page.
Related topics
  • NavigationPage navigation, zoom, fit-to-width, and scroll controls for working with multi-sheet PDF drawing sets in LocusBIM.
  • Workspace LayoutSplit view, side-by-side panels, and drag-to-resize dividers for working in PDF and 3D viewer at the same time.
  • Keyboard ShortcutsComplete keyboard reference for LocusBIM — markup tools, navigation, undo/redo, and the Ctrl+F find bar.