I posted this as a discussion but only got one reply, so maybe better as a question. The Time Slider widget appears with two handles or thumbs to define the time period shown on the map. However in many cases for historical data we want to show a "snapshot" i.e. the situation at a single point in time, not over a period, and certainly not over an adjustable period. For example, to show a single census year's data you don't want to bracket more than one decade. The two handles can be brought together, but this may be confusing for the
