When timer expires<qualifier>:

When the system crashes<qualifier>:

When the telephone tone(s) “<tones>” are heard<qualifier>:

When system shuts down<qualifier>:

After a power failure<qualifier>:

When “Power On” key is pressed<qualifier>:

When phone rings <pattern><int> times<qualifier>:

When system is idle more than <int> minutes<qualifier>:

When keystroke “<key>” is pressed<qualifier>:

On the <offset> <day> of each month at <time><qualifier>:

At <time> on <daylist><qualifier>:

Every <interval>, starting at <time> <date><qualifier>:

At <time> on <date><qualifier>: