Sets up the format for file names, which is reflected in the New DWG dialog box that designers use to create new drawings.
Click Add to start creating a file name format.

Lists the fields that you use to create a file name format for a project.
Sets the name of the field in the New Dwg dialog box.
Specifies the type of entry (for example: string, numeric, and so on).
Sets the maximum length of the entry. This box is available only for string or numeric entries.
Sets the character to be placed between items in the file name (for example: comma or dash).
Removes a line of file name fields.
Adds a line of file name fields.