Rain area (Water Overlay)

A Rain area is a feature which can override the Weather's rain with a different array of values. This allows users to simulate rain clouds moving over the project area.

Icon	Key	Unit	Range	Description	Default value
	RAIN_M	end-time, m		An array of values, each pair indicating until what time that period of rain will last and how much rain will fall in that period.	n/a

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A maximum of 10.000 values (5.000 pairs) can be defined per rain area.
Up to 32.000 rain areas per Water Overlay are supported.
It's not required to fill the entire project area with Rain areas to use the Rain area functionality. For locations without a Rain area, the Weather's rain m is applied.
The configured Weather dictates the simulated time and optional starting date. If the rain sequence of the Rain area is defined beyond the duration of the Weather time sequence, the excess of the Rain area time sequence is ignored. If the Rain area's time sequence ends before the Weather's time sequence, the remainder of the time sequence of the Rain area is considered to be 0;

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