Computer-implemented method, computer system and computer program product for providing and processing a human interface description. A user submits data 170 by using an human interface description 160. The data 170 comprise status information of at least one layout element of human interface description 160. The computer system receives 480 the data 170. Optionally, the computer system stores 485 the data 170 in a data instance 150. The data instance 150 can be modified by an application program via interface 155. Preferably, the computer system provides the human interface description 160 by merging 470 a layout template 140-1 with the data instance 150. Preferably, the data instance 150 is instantiated from a data description 140-2.