Detach duplicate:

Detach duplicate, ODEDIT_REMOVE_DUPLICATE_OD command – detaching of duplicate OD from graphic elements. At the command line type f, F, First to detach the first duplicate OD, or l, L, Last – for the last duplicate OD. After detaching, only one record of the corresponding OD remains for the graphic elements.

The command processes both the preliminary and subsequent selection of graphic elements. By subsequent selection Enter means "all objects". Only graphic elements from visible and unfrozen or unlocked layers are processed.

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