Hello Everyone, Since I am working on the class’ title setting facilities, that means I need to work on storing and formatting document metadata (title, author, date, &c). I found myself stuck on dates. There are several options for interally representing dates, times, and datetimes, but I came to the conclusion that it is best to simply store them as strings, according to ISO 8601. This makes sorting trivial. Extracting specific fields and accounting for cases when a field is omitted (e.g. the day or seconds) can be handled with some commands that process the underlying string appropriately. I mention this because I don’t know if the team has any particular plans for managing dates and times. With the problem of storage sorted, I turned to formatting. I found that there exist 2e solutions for formatting dates, times, and even integers, thanks to the `datetime2` and `fmtcount` packages. However, I would like to develop a solution that uses templates. Formatting dates brings up the issue of locale management. Now, since this class is incompatible with many packages, I know that I will need to implement the functionality of some important packages if I want that available. Since locale can affect various parts of typesetting, it is just as well that I provide at least a rudimentary interface for locales, from the start. The (now deprecated) instance collections of `xtemplate` would have been my first idea for managing the various parts of a locale: dates, times, quotations, punctuation spacing, numbers, &c. However, collections are deprecated for a reason. I was wondering, what are the current thoughts on managing templates or related sets formatting? —Kelly