Organization / Re-usability(Is there argument?) → Portable(can give it to somebody else)/ Modularity
Isolate Update / Display !!!!
modulation&re-usability
position / lower&upper boundary / direction
let arr = [ ];
= [ 1, 4, 6, 7, 8, 9 ];
arr. push (9);
arr[3]=5; -”change 4th
arr[3] - “value”
xs.length ??
5 min Presentation
Present technical aspect of sketch
Callback function
Browser - loads documents