1. A method for carrying out at an apparatus including a display device, an input device and a processor, the method comprising: rendering, to the display device, a structured electronic document; receiving, through the input device, a plurality of separate indications of content elements within the structured electronic document, such that a plurality of indicated content elements are defined; identifying, by the processor, a common characteristic shared by the plurality of indicated content elements; identifying, by the processor, a further content element as having the common characteristic; identifying, by the processor, an array of related content elements within the rendered structured electronic document, the array of related content elements including the plurality of indicated content elements and the further content element; and highlighting, on the structured electronic document rendered to the display device, each content element in the array of related content elements.