Abstract: A user captures a digital image of a paper where the user has marked one or several objects or commands with a pen. The marking is done according to a predefined set of marking rules, which eases the separation of objects and commands later on. Examples of rules for marking objects or commands are encircling, underlining and highlighting. The embedded commands in the digital image can be associated with one or several objects in the digital image. The association is done according to a predefined set of association rules. The image is then transmitted to a computing device for processing. The transmission is using a cable, IR or RF technologies like Bluetooth or cellular telephony. The computing device is called “command-server”. It identifies and separates objects and commands by analysing the digital image using the predefined set of marking rules.