}
/**
- * returns the time step of a node. Each node in a block has a timestep
- * unique to that block. a node schedule before another node has a lower
+ * Returns the time step of a node. Each node in a block has a timestep
+ * unique to that block. A node schedule before another node has a lower
* timestep than this node.
* @param irn The node.
* @return The time step in the schedule.