This article discusses and documents the option, useEnNums, for the dljlib package designed to work with numbers in the English format. For English (U.K., U.S.A.) and many other countries the period(.) is used for the decimal mark (separator).
Review the demonstration file: en-fmt.pdf. The source file for this PDF is attached to the PDF; Adobe Acrobat or Reader is needed to detached it.
Related article: German number format