You can select either imperial or metric units for the new drawing if you choose Start from Scratch. The setting you select determines default values which is used for many system variables controlling text, dimensions, grid, snap, and the default linetype and hatch pattern file.
Imperial. A new drawing with the imperial measurement system. The drawing uses internal default values, and the default boundary is 12 × 9 inches.
Metric. A new drawing with the metric measurement system. The drawing uses internal default values, and the default boundary is 429 × 297 millimeters.
When you start ZWCAD, there are three options for choosing to draw. You can start from scratch using default settings, you can start from a template file with a preset environment, or you can use a wizard to step you through the process, in each case, you can choose the conventions and defaults you want to use.
Start a Drawing from Scratch
You can start from scratch to create a new drawing quickly by using settings from a default drawing template file.
To start a drawing from scratch with the Startup dialog box.
On the File menu, click New.
In the Startup dialog box, click Start from Scratch.
Under Default Settings, click either Imperial or Metric.
Command line NEW
NEW: Creates a new drawing
OPTIONS: Customizes the ZWCAD settings
QNEW: Starts a new drawing with the option of using a default drawing template file
System Variables Reference
FILEDIA: Suppresses display of the file dialog boxes
MEASUREINIT: Sets the initial drawing units as imperial or metric
MEASUREMENT: Sets drawing units as imperial or metric for the current drawing only
STARTUP: Controls whether the Create New Drawing dialog box is displayed when starting a new drawing
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