Editing SS13 for experienced programmers (section)

=== [http://www.byond.com/members/?command=reference&path=atom%2Fproc%2FNew New()] ===
This proc is called whenever a new instance of the object is created. It can have arguments if needed. It should call ..() where applicable so that parent constructors can be applied.

If you wish to create a New() proc for [[#Variable types|atoms]] with custom arguments, ensure the first argument is for the object's location. Example:
  obj/item/weapon/my_item/New(var/location, var/i)
    ..()
    //Whatever else you need to do

To make a general object use
  [http://www.byond.com/members/?command=reference&path=proc%2Fnew new] /datum/test_datum
To make an atom (which usually has a locaiton)
  [http://www.byond.com/members/?command=reference&path=proc%2Fnew new] /obj/item/weapon(src.loc)
For the custom example above, the code to create a new such object would be: The 5 is just an example of a value which could be assigned to the var/i in the constructor.
  [http://www.byond.com/members/?command=reference&path=proc%2Fnew new] /obj/item/weapon/my_item(src.loc, 5)
Where src is the proc owner, which contains the line above. src.loc is the locaiton of the src object.