alpha "rhs"right hand side evaluated first "lhs"left hand side processed second the key thing to note is that the processing happens right to left everything to the right hand side is processed first only after that processing is done is the left hand side considered in this example it' trivial it will become less trivial very soon so remember that the right hand side is evaluated before the left hand side is even looked at pscomputing uses the phrases "left hand sideand "right hand sideso often that they are typically written as "lhsand "rhs