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Background processing Background screen display (SB) BASE256 function BASE64 function (BF) mnemonic BINARY function (BIOS Mouse On) mnemonic Blank fill (BF) Blank if zero (BZ) Blank stripping Blind mode (BM) (Blink) mnemonic (BM) mnemonic		BOF parameter Branching statement, GOTO Branching statement, ON/GOTO BREAK statement (Bright) mnemonic BTRIEVE gateway BUF parameter Buffer size Byte-align COMMON (BZ) modifier