anchor.diff:     ;
   
   ope
  -   : POP | IDIV | INC | DEC | NEG | MUL | DIV | IMUL | NOT | SETPO | SETAE | SETNLE | SETC | SETNO | SETNB | SETP | SETNGE | SETL | SETGE | SETPE | SETNL | SETNZ | SETNE | SETNC | SETBE | SETNP | SETNS | SETO | SETNA | SETNAE | SETZ | SETLE | SETNBE | SETS | SETE | SETB | SETA | SETG | SETNG
  +   : POP
  +   | IDIV
  +   | INC
  +   | DEC
  +   | NEG
  +   | MUL
  +   | DIV
  +   | IMUL
  +   | NOT
  +   | SETPO
  +   | SETAE
  +   | SETNLE
  +   | SETC
  +   | SETNO
  +   | SETNB
  +   | SETP
  +   | SETNGE
  +   | SETL
  +   | SETGE
  +   | SETPE
  +   | SETNL
  +   | SETNZ
  +   | SETNE
  +   | SETNC
  +   | SETBE
  +   | SETNP
  +   | SETNS
  +   | SETO
  +   | SETNA
  +   | SETNAE
  +   | SETZ
  +   | SETLE
  +   | SETNBE
  +   | SETS
  +   | SETE
  +   | SETB
  +   | SETA
  +   | SETG
  +   | SETNG
      ;
   
   oper
  
positive.code:    ;
  
  opera
     : POPAD | AAA | POPA | POPFD | CWD | LAHF | PUSHAD | PUSHF | AAS | BSWAP | PUSHFD | CBW | CWDE | XLAT | AAM | AAD | CDQ | DAA | SAHF | DAS | INTO | IRET | CLC | STC | CMC | CLD | STD | CLI | STI | MOVSB | MOVSW | MOVSD | LODS | LODSB | LODSW | LODSD | STOS | STOSB | STOSW | SOTSD | SCAS | SCASB | SCASW | SCASD | CMPS | CMPSB | CMPSW | CMPSD | INSB | INSW | INSD | OUTSB | OUTSW | OUTSD
     ;
  
  operat
     : ADC | ADD | SUB | CBB | XOR | OR
     ;
  
  operato
     : JNBE | JNZ | JPO | JZ | JS | LOOPNZ | JGE | JB | JNB | JO | JP | JNO | JNL | JNAE | LOOPZ | JMP | JNP | LOOP | JL | JCXZ | JAE | JNGE | JA | LOOPNE | LOOPE | JG | JNLE | JE | JNC | JC | JNA | JBE | JLE | JPE | JNS | JECXZ | JNG
     ;
  
  operator
     : MOVZX | BSF | BSR
     ;
  
  l
     : LES | LEA | LDS | INS | OUTS
     ;
  
  x
     : XADD | CMPXCHG
     ;
  
  s
     : SHL | SHR | ROR | ROL | RCL | SAL | RCR | SAR
     ;
  
  sh
     : SHRD | SHLD
     ;
  
  b
     : BTR | BT | BTC
     ;
  
  call
  
negative.code:    ;
  
  re
     : REP
     | REPE
     | REPZ
     | REPNE
     | REPNZ
     ;
  
  directives
     : ALPHA
     | CONST
     | CREF
     | XCREF
     | DATA
     | DATA2
     | DOSSEG
     | ERR
     | ERR1
     | ERR2
     | ERRE
     | ERRNZ
     | ERRDEF
     | ERRNDEF
     | ERRB
     | ERRNB
     | ERRIDN
     | ERRDIF
     | EVEN
     | LIST
     | WIDTH
     | MASK
     | SEQ
     | XLIST
     | EXIT
     | MODEL
     ;
  
  ty
     : BYTE
     | SBYTE
     | DB
     | WORD
     | SWORD
     | DW
     | DWORD
     | SDWORD
     | DD
     | FWORD
     | DF
     | QWORD
     | DQ
     | TBYTE
     | DT
     | REAL4
     | REAL8
     | REAL
     | FAR
     | NEAR
     | PROC
     ;
  
  question
  