How do you get system time in specified precision?

[Steven Schveighoffer via Digitalmars-d-learn]

On 2/1/16 8:17 PM, Enjoys Math wrote:
> That is in metric system units?
>
> Ie milli-, micro-, hectanano-, nano-seconds?

Those are available from SysTime.fracSecs.

Is that what you are looking for? If not, please be more specific. time 
has a lot of different meanings.

-Steve