Abstract: A method of locating a specified portion of a digital data stream in each of a plurality of visual representations of the data stream, the method comprising: determining the value of a first data stream location unit corresponding to the specified portion of the digital data stream for a first one of the data stream visual representations, the first data stream location unit being specific to the first data stream visual representation; causing a first data processing entity associated with the first data stream visual representation to convert the first data stream location unit to a second data stream location unit; transmitting the second data stream location unit to each of a plurality of further data processing entities, each further data processing entity being associated with a further one of the plurality of visual representations; and causing, in response to receiving the second data stream location unit, each of the further data processing entities to convert the second data stream location unit to

Abstract: A user interface help dialog for a computer system is provided in which the computer system has a plurality of system parameters and the user interface includes a plurality of command options that may be enabled or disabled. A cursor for indicating one of the command options is also provided. To generate the help dialog the identity of a disabled command option to which the cursor indicates is first identified. The status of a subset of the system parameters is then evaluated, the system parameters subset being determined in dependence on the identified command option. A help dialog to be displayed to the user is then generated, the content of which is dependent on the status of the evaluated system parameters.

Abstract: A method of managing a memory resource is provided for the storage of a plurality of sequentially received data elements, each data element comprising a plurality of data integers, the method comprising prior to storing a received data element, checking if the available storage capacity of the memory resource is less than a predetermined threshold value and in response to the available storage capacity being less than the predetermined threshold value, deleting at least one data integer from at least one of the data elements stored in the memory resource.