===DateFormat===

The **DateFormat** function of the [[mplreport]] class returns a DateTime format string suitable for the chosen report range.

For example, a report of less than 24 hours will usually use the **HH:MM** date format, while longer reports will use **%H %d/%m**.

==Parameters==

^Parameter^Type^Default^Meaning^
|starttime|DateTime|None|The starting date. If //None//, the start DateTime for the report will be used.|
|endtime|DateTime|None|The ending date. If //None//, the end DateTime for the report will be used.|

==Return==

A string containing the format to be used in functions such as **DateTime::strftime**.