AutoCAD and AutoCAD LT offer a number of options for opening new and existing drawings. These options create a great deal of flexibility and save you time as well. You can create complex templates to avoid doing the same basic setup and drawing over and over.
A template is a special file that contains drawing settings and often objects (such as a titleblock and text). A template has a DWT filename extension. When you use a template as the basis for a new drawing, the drawing takes on all the settings and objects contained in the template. Use templates to avoid re-creating settings and redrawing objects for new drawings. AutoCAD and AutoCAD LT come with many templates that you can use as is or customize. You can also create your own templates.
When you launch AutoCAD or AutoCAD LT for the first time, the Initial Setup window opens, prompting you to specify certain settings about your drawing environment. Those settings will affect the default template. For more information, see Appendix A.
To create a new drawing based on a template, choose Application Button
Choose Application Button, click the Options button, and click the Files ...