(command.CommandList
  children: [
    (command.ShAssignment
      left: <Id.Lit_VarLike 'SCRIPT_NAME='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'SCRIPT_NAME='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'SCRIPT_NAME='> name:SCRIPT_NAME)
          op: assign_op.Equal
          rhs: {<mmo>}
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'TARGET_PAGE_SIZE='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'TARGET_PAGE_SIZE='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'TARGET_PAGE_SIZE='> name:TARGET_PAGE_SIZE)
          op: assign_op.Equal
          rhs: {<256>}
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'TEXT_START_ADDR='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'TEXT_START_ADDR='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'TEXT_START_ADDR='> name:TEXT_START_ADDR)
          op: assign_op.Equal
          rhs: {(SQ <'DEFINED (__.MMIX.start..text) ? __.MMIX.start..text : 0'>)}
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'DATA_ADDR='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'DATA_ADDR='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'DATA_ADDR='> name:DATA_ADDR)
          op: assign_op.Equal
          rhs: {(SQ <'DEFINED (__.MMIX.start..data) ? __.MMIX.start..data : 0x2000000000000000'>)}
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'OUTPUT_FORMAT='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'OUTPUT_FORMAT='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'OUTPUT_FORMAT='> name:OUTPUT_FORMAT)
          op: assign_op.Equal
          rhs: {<mmo>}
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'RELOCATEABLE_OUTPUT_FORMAT='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'RELOCATEABLE_OUTPUT_FORMAT='>
          lhs: 
            (sh_lhs_expr.Name
              left: <Id.Lit_VarLike 'RELOCATEABLE_OUTPUT_FORMAT='>
              name: RELOCATEABLE_OUTPUT_FORMAT
            )
          op: assign_op.Equal
          rhs: {<elf64-mmix>}
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'ARCH='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'ARCH='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'ARCH='> name:ARCH)
          op: assign_op.Equal
          rhs: {<mmix>}
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'COMPILE_IN='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'COMPILE_IN='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'COMPILE_IN='> name:COMPILE_IN)
          op: assign_op.Equal
          rhs: {<yes>}
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'EXTRA_EM_FILE='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'EXTRA_EM_FILE='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'EXTRA_EM_FILE='> name:EXTRA_EM_FILE)
          op: assign_op.Equal
          rhs: {<mmo>}
        )
      ]
      redirects: []
    )
  ]
)