Patent ID: 7415674

Claim:
One or more computer-storage media having computer-useable instructions embodied thereon for updating an electronic drawing comprising: instructions for presenting a representation of an uneditable version of the electronic drawing, wherein presenting the representation of said uneditable version of the electronic drawing further comprises the following: automatically defining a unit measurement associated with future edits, automatically defining a scale associated with future edits whereby additions made to the electronic drawing are made at the same scale as the electronic drawing, automatically defining a layer associated with future edits whereby additions made will be captured in said layer, and providing a customized template that includes a set of user-defined icons, wherein edits can be made to said electronic drawing by dragging said icons onto said representation; instructions for receiving edits to said electronic drawing, wherein said edits are layered and do not modify the electronic drawing; and instructions for storing said layered edits separate from said electronic drawing.