<enabled>; false when the element is missing.

<enableHighlight>: draw motion on the live picture, when present.

<samplingInterval>: frames between two compared pictures, when present.

<startTriggerTime>: milliseconds of motion before the alarm starts, when present.

<endTriggerTime>: milliseconds of stillness before the alarm ends, when present.

<regionType>: grid, roi, none, region, or whatever else the device sent.

<rowGranularity>: rows in the grid, when <Grid> is present.

<columnGranularity>: columns in the grid, when <Grid> is present.

<sensitivityLevel>, 0 to 100.

<gridMap> decoded, grid[row][column] being true where motion counts.

The <RegionList> polygons in document order, when there is at least one.

<targetType> split on commas, such as ["human", "vehicle"]; newer cameras only.