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keywords

and operators 19

event keyword

case sensitivity and 46

using event object in event handler 266

if keyword 4

function keyword 103, 106

high-level languages 4

new keyword

creating arrays 140

creating custom objects 221

playing part of verb in statements 19

prototype keyword 223

return keyword 63, 109

creating functions 103

function for adding numbers 109

this keyword 221

var keyword 23

Kleene, Stephen and invention of regular expressions 321