Abstract: A computer implemented method for defining, at a web browser, an element of a web page for variation, the method comprising the steps of: the browser providing an element selection facility for a user to select an element for variation as a variable element; in response to an element selection, the browser storing an identifier of the variable element; the browser rendering a variant of the web page by adding at least one additional element to the web page so as to render the web page with a variation of the variable element.

Abstract: From one aspect, a computer implemented method, apparatus and computer program product is provided for varying at least one element of a plurality of elements of a viewable area of a native software application during runtime on a first computing device, the method comprising highlighting at least one element of the viewable area of a native software application, receiving a user input relating to a selection of the element and information relating to a modification of the element; storing, as element information, an identifier of the selected element and the modification information of the selected element, and transmitting the element information to a server computer system if a network connection is available.