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The two working environments of drawing files, namely model space and paper space, are accessible by the Model tab and Layout tab in the bottom-left corner of the viewer. The Layout tab is the on right of the software user interface. You can switch between Model and one or more layouts.

Note: The layout tabs can have different names other than the default names that are displayed in the illustration. If the tabs that you are looking for are not visible in the application window, you can, at any time, turn them on in the View->Layout dialog.

Model Tab

The Model tab contains a full-size model of the subject created in model space. Views of model space are arranged and scaled on layout tabs for printing (plotting) and digital publishing.

The drawing area in model space can be split into smaller areas called model viewports. This feature is useful for displaying different views of large models at the same time. With Easy CAD Viewer, you can pan and zoom in each model viewport. When multiple model viewports are displayed, move your mouse cursor and click in a viewport to make it the current viewport.

Some drawings are created exclusively in model space, including model geometry, dimensions, text, tables, and title blocks. For these drawings, the layout tabs are not used and the entire drawing is scaled when printing or publishing.

Layout Tabs

The layout tabs represent printed drawing sheets created in paper space. Each layout tab contains one or more scaled views of model space and can also contain a title block and notes.

In paper space, pan and zoom operations are applied to the entire layout.

Each view on a layout tab is displayed in a layout viewport, an object that acts as a window into model space. Each layout viewport can display a different view of the model at a different scale.

Note: Layout viewports are objects that are usually created on their own special layer. The border of each layout viewport can be turned on and off at any time by turning the viewport layer on and off. This is usually done prior to printing or publishing.