You can start a new drawing several ways, including starting from scratch or using a template file. In each case, you can choose the units of measurement and other unit format conventions.
You can start from scratch from the Create New Drawing dialog box, from the Select Template dialog box, or with a default drawing template file that uses no dialog box at all.
A drawing template file is used to provide consistency in the drawings that you create by providing standard styles and settings.
A setup wizard establishes basic drawing settings step by step.
Before you start to draw, you decide on the units of measurement to be used in the drawing, and set the format, precision, and other conventions to be used in coordinates and distances.
You can keep track of your drawings more easily if you add keywords or other information to them.