COMMENT(!MOD!zsh/sched
A builtin that provides a timed execution facility within the shell.
!MOD!)
The tt(zsh/sched) module makes available one builtin command:

startitem()
findex(sched)
cindex(timed execution)
cindex(execution, timed)
xitem(tt(sched) [tt(PLUS())]var(hh)tt(:)var(mm) var(command) ...)
item(tt(sched) [ tt(-)var(item) ])(
Make an entry in the scheduled list of commands to execute.
The time may be specified in either absolute or relative time.
With no arguments, prints the list of scheduled commands.
With the argument `tt(-)var(item)', removes the given item
from the list.
)
enditem()