Timer Cycle - the actual time expression that shall be used - can be string (interval based 2m or 2m###5m - where first is the initial delay and the delay for repeated fires), string cron expression or can be process variables and in v6 it can be ISO-8601 date format
Timer Cycle Language - can be default interval or cron
Timer Duration - one time expiration timer - delay after which timer should fire, string interval, process variable and in v6 ISO-8601 date format for duration
What is the full grammar of default cycle language? How could be days, weeks, years expressed?
it can be ISO-8601 date format
As regards ISO-8601, is only the date supported? What about time? Durations, intervals, repeating intervals?