Modified Assignment

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Afn←R is shorthand for A←Afn R.
A[I]fn←R is shorthand for A[I]←A[I]fn R
A is a name with an existing value, I is an arbitrary index to A, R is an arbitrary array.



For example, A+←1 is shorthand for A←A+1, and A,←' ' is shorthand for A←A,' '.