Explain ALIGN & ASSUME

Explain ALIGN & ASSUME
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The ALIGN directive forces the assembler to align the nextsegment at an address  divisible by specified divisor. The format is ALIGN number where number can be 2, 4, 8  or 16. Example ALIGN 8.  The ASSUME directive assigns a logical segment to a physical segment at any given  time.  It  tells  the  assembler  what  address  will  be  in  the  segment  registers  at  execution  time. Example ASSUME CS: code, DS: data, SS: stack
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