13. Parts of the syntax

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                   Comment # any text
  
       Assembler directive .data, .asciiz, .global
  
        Operation mnemonic add, addi, lw, bne
  
             Register name $10, $t2
  
      Address label (decl) hello:, length:, loop:
  
       Address label (use) hello, length, loop
  
          Integer constant 16, -8, 0xA4
  
           String constant "Hello, world!\n"
  
        Character constant 'H', '?', '\n'