1. A method, in a data processing system of determining at a second document of a set of documents in a second language having the same textual content as a first document in a first language, the method comprising: generating a first histogram, the first histogram being indicative of the textual content of the first document; generating a second histogram for each document of the set of documents, each second histogram being indicative of the textual content of a document of the set of documents; comparing each second histogram with the first histogram to determine at least one histogram from a plurality of second histograms which matches the first histogram; and identifying the second document as the document having the at least one histogram.