Repeat Blocks

A repeat block defines a sequence of steps that iterate according to a condition and/or delay. A repeat block is introduced as follow.

``repeat'' ``while'' condition

``repeat'' ``every'' duration_specification

``repeat'' ``every'' duration_specification, ``while'' condition

The first form introduces repetitive steps controlled by a condition, the second form repetitive steps controlled by time and the third form introduces repetitive steps controlled by time and a condition.