I was only needed during the first half of the bill, and in the interval I put the violin in its case, strapped the case on like a backpack and hurried out of the hall to meet them in the car park.

The Interval is half-open, meaning that the span of time encapsulated by the Interval includes the beginning of the span but excludes the end.

Among these researches, more than half start from the proper road spacing interval discussion based on an given ideal square networks.