A register-relative expression evaluates to a named register plus or minus a numeric constant (see MAP).

A program-relative expression evaluates to the Program Counter (PC), plus or minus a numeric constant. It is normally a label combined with a numeric expression.

        LDR     r4,=data+4*n    ; n is an assembly-time variable
        ; code
        MOV     pc,lr
data    DCD     value0
        ; n-1 DCD directives
        DCD     valuen          ; data+4*n points here
        ; more DCD directives