This macro allows you to be able to update multiple dates in a page all at once.

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1. Insert a date using // (or /date if using the new editor).
2. Insert the Date Modifier macro.
3. In the editor dialog,
   1. choose the source page (or none to keep the source as the current page.
   2. choose which # date element in the page to reference (so, for example, if there were two date elements in the page and you want to reference the 2nd one, put a 2 here). Please note that these have to be a real Date (macro), you cannot reference another Date Modifier macro.
   3. choose how many days to modify the referenced date. You can either work forward from a start date (so for 5 days later, insert 5), or you can work backward from an end date (so for 5 days earlier than some date, insert -5).
4. Save the page, and your dates should appear properly. We have worked hard to make the editor preview show the proper values, but the best way to be sure everything is working properly is to save the page.

Example:

Requirements