//  Declare Timer object as a global variable
Timer led_timer;

void setup() {
    //  Set the LED pin to 13 and the period to 1 second (1000 ms)
    led = 13;
    period = 1000;
    Call initiate_pulse once with the LED pin and period in milliseconds as arguments    
    led_timer.initiate_pulse(led, timer)
}

void loop() {
    //  Call update_pulse in a loop to flash the LED with the given period
    led_timer.update_pulse();
}

Timer delay_timer;

void setup() {
    //  Empty
}

void loop() {
    //  Set the period to 10 seconds (10000 ms)
    period = 10000;
    //  Use this Timer to wait until a given time period has passed to do something
    if (delay_timer.wait(period)) {
        //  Do stuff
    }
}