command?
 

what exactly does the for command do??

for (a; b; c) d;
First executes a; then, until b is false, executes d and c.
for (i = 0; i < 5; i ++) { playerx = i; sleep 0.5; }

Yeah, the for command is a type of loop.
Using the example Loriel used:

NPC Code:

---

for (a ; b ; c)

---

a is usually where the variable initialization takes place.

NPC Code:

---

i = 0;

---

b is where the program checks whether or not the requirements to meet the loop are met. If the requirements are met, the loop is peformed and c is done.

NPC Code:

---

i < 10;

---

c is the increment.

NPC Code:

---

i++

---

Becareful not to place yourself in infinite loops...

NPC Code:

---

for (i = 0;i < 10;i--)

---

...such a case.

Hope I did not confuse you more than you were before :(.

i=0;
while (i<5){
i++
}

Is the same as
for (i=0;i<5;i++){
}

Also a do loop is almost the same as a for and a while, just the fact that a do loop does the loop first then checks requirements.

NPC Code:

---

do {

  //actions;

  //increment;

} while (condition);

---

That is the basic format incase anyone who doesn't know, wants to.

But unfortunatly a do loop does not yet work on Graal :|

New engine, hopefully. x.x

Pft, nobody uses do {} while (); loops anyway.

so true ^_^ first time that a saw the debugger changes for loops into whiles i was like "omg wtf??? GRAAL CHANGERD MY SCRIPT!!!!!" but then i looked at it and said.. "oh.. its the same damn thing"