Copying Blocks with Datalinks in AutoCAD

Since Datalinks are defined as Extended Entity Data within AutoCAD, their behaviour is same as Xdata. That is, if a block is copied with Datalinks attached, the Datalinks are copied too. This can drastically reduce data entry when setting up Datalinks.

For example, required Datalinks can be attached to a block that may represent a Field Device. That block can the be copied to as many drawings as required, saving the effort of re-entering the Datalinks each time. Another example is the Title block used in all drawings. Set-up the first drawing with all Datalinks, and once it has been tested, copy that Title Block (which may contain multiple AutoCAD blocks) to the other drawings.