Sealed methods
Multiplies a duration by a scale factor.
* duration scale => new-duration
* scale duration => new-duration
<duration>.
<real>.
Note: These arguments can be expressed in any order.
<date> or <duration>. See description for details.
system
date
Multiples a duration by a scale factor and returns the result. Note that the arguments can be expressed in any order: methods are defined such that the duration can be placed first or second in the list of arguments.