Stupid Linked Door Script Question

Hi. Newbie scriptor/builder here.

I've managed to cobble together a door script I like, works perfectly. But I would really like to be able to make it work with double doors so that both doors are linked together and open together at the same time. Now, before you ask, I have spent hours and hours reading everything I can find - and I've played with the pertinent portion of the Timeless Door Script. But I just can't get it to work. I know how to link the two doors together. What I can't figure out is how to click on one door and make them both open seperately but together (instead of not at all or as one big hinge). Can someone give me some simply explained help with making this script work to do what I want?

// DOOR SCRIPT

float CLOSE_TIME = 5.0;

integer DIR = -1;

integer OPEN = 1;
integer CLOSE = 2;

vector mypos;

door(integer A) {
rotation rot;
rotation delta;

llSetTimerEvent(0);

if ( A == OPEN ) {

rot = llGetRot();
delta = llEuler2Rot(<0, 0, -DIR * PI_BY_TWO>;
rot = delta * rot;
llSetRot(rot);

} else if ( A == CLOSE) {
rot = llGetRot();
delta = llEuler2Rot(<0, 0, DIR * PI_BY_TWO>;
rot = delta * rot;
llSetRot(rot);

}
}


default {
on_rez(integer B) {
llResetScript();
}

state_entry() {
mypos = llGetPos();
}

touch_start(integer total_number) {
door(OPEN);

state is_open;
}

moving_end() {
mypos = llGetPos();
}
}

state is_open {
state_entry() {
llSetTimerEvent(CLOSE_TIME);
}

touch_start(integer num) {
door(CLOSE);

llSetPos(mypos);

state default;
}

timer() {
door(CLOSE);

llSetPos(mypos);

state default;
}

moving_start() {
door(CLOSE);

state default;
}
}

i would add a touch llMessageLinked in each touch event, and a link_message event in each script same as the touch event in each state.
-LW

I'm figuring something like that, but frankly I can't figure out the proper syntax for the llMessageLinked and link_message stuff. Can you give me an example?

to sent link message:

touch_start(integer total_number)
    {
        llMessageLinked(LINK_SET, 0, "open", "");
    }

to receive message:

link_message(integer sender, integer num, string message, key id) 
    {  
        if (message == "open") 
        {  
            //  dostuff
        } else if (message == "close") 
        {  
            //  dostuff
        } 
         
    }  

-LW

Thank you for the help so far. Haven't gotten it to work yet, but I'm still banging away.