EVERY execute a command every given period
This command is in a way similar to the 'cron' Linux/unix command/scheduler.
T = EVERY(DELAY, COMMAND) executes the command after the given delay, in seconds.
The DELAY must be a single number, in seconds.
The COMMAND can be (see 'timer' documentation):
'code' a single string (matlab code),
@code(src,evnt, ...) a function handle with arguments source(timer) and
event type, and optional arguments.

To stop the execution, use STOP(T).

Example: every(3, 'disp hello')