1. A method of enabling input on a handheld electronic device, the handheld electronic device including an input apparatus, an output apparatus, and a linguistic source stored on a memory, the input apparatus having a number of keys, including one or more keys each having at least one non-diacritical version of a linguistic element assigned thereto and at least one diacritical version of the linguistic element assigned thereto, the method comprising: detecting selection of one of the keys; based at least in part on the detection of the key selection, determining whether to output (i) a non-diacritical version of a linguistic element assigned to the selected key or (ii) a diacritical version of the linguistic element assigned to the selected key in response to the selection, the determination comprising: determining whether the selection corresponds to a first alphanumeric input for the enabled input, based upon a determination that the selection corresponds to the first alphanumeric input for the enabled input, determining to output the non-diacritical version of the linguistic element assigned to the selected key, and based upon a determination that there have been previous alphanumeric inputs for the enabled input, determining whether to output the non-diacritical version or the diacritical version of the linguistic element based on whether the previous alphanumeric inputs satisfy a predetermined condition; and outputting the determined output using the output apparatus.