A user equipment node is disclosed that includes a camera device and a processor. The camera device outputs digital images. The processor identifies in at least one of the digital images at least one location of a user controlled object relative to a physical document. The processor also identifies at least one corresponding location within a digital document where a defined action is to be performed to modify the digital document. The digital document represents the physical document. The user equipment node may modify the digital document using the defined action at the at least one corresponding location to generate a modified digital document, or the user equipment node may communicate information to cause a network node to modify the digital document. Related network nodes are disclosed.