pub const EOL: &str = "\n";
pub const CTL_LF: &[u8] = b"\x0a"; pub const CTL_FF: &[u8] = b"\x0c"; pub const CTL_CR: &[u8] = b"\x0d"; pub const CTL_HT: &[u8] = b"\x09"; pub const CTL_VT: &[u8] = b"\x0b";
pub const LS_DEFAULT: &[u8] = b"\x1b\x32";
pub const LS_SET: &[u8] = b"\x1b\x33";
pub const HW_INIT: &[u8] = b"\x1b\x40"; pub const HW_SELECT: &[u8] = b"\x1b\x3d\x01"; pub const HW_RESET: &[u8] = b"\x1b\x3f\x0a\x00";
pub const CD_KICK_2: &[u8] = b"\x1b\x70\x00"; pub const CD_KICK_5: &[u8] = b"\x1b\x70\x01";
pub const PAPER_FULL_CUT: &[u8] = b"\x1d\x56\x00"; pub const PAPER_PART_CUT: &[u8] = b"\x1d\x56\x01"; pub const PAPER_CUT_A: &[u8] = b"\x1d\x56\x41"; pub const PAPER_CUT_B: &[u8] = b"\x1d\x56\x42";
pub const TXT_NORMAL: &[u8] = b"\x1b\x21\x00"; pub const TXT_2HEIGHT: &[u8] = b"\x1b\x21\x10"; pub const TXT_2WIDTH: &[u8] = b"\x1b\x21\x20";
pub const TXT_UNDERL_OFF: &[u8] = b"\x1b\x2d\x00"; pub const TXT_UNDERL_ON: &[u8] = b"\x1b\x2d\x01"; pub const TXT_UNDERL2_ON: &[u8] = b"\x1b\x2d\x02"; pub const TXT_BOLD_OFF: &[u8] = b"\x1b\x45\x00"; pub const TXT_BOLD_ON: &[u8] = b"\x1b\x45\x01";
pub const TXT_FONT_A: &[u8] = b"\x1b\x4d\x00"; pub const TXT_FONT_B: &[u8] = b"\x1b\x4d\x01"; pub const TXT_FONT_C: &[u8] = b"\x1b\x4d\x02";
pub const TXT_ALIGN_LT: &[u8] = b"\x1b\x61\x00"; pub const TXT_ALIGN_CT: &[u8] = b"\x1b\x61\x01"; pub const TXT_ALIGN_RT: &[u8] = b"\x1b\x61\x02";
pub const BARCODE_TXT_OFF: &[u8] = b"\x1d\x48\x00"; pub const BARCODE_TXT_ABV: &[u8] = b"\x1d\x48\x01"; pub const BARCODE_TXT_BLW: &[u8] = b"\x1d\x48\x02"; pub const BARCODE_TXT_BTH: &[u8] = b"\x1d\x48\x03";
pub const BARCODE_FONT_A: &[u8] = b"\x1d\x66\x00"; pub const BARCODE_FONT_B: &[u8] = b"\x1d\x66\x01";
pub const BARCODE_HEIGHT: &[u8] = b"\x1d\x68\x64"; pub const BARCODE_WIDTH: &[u8] = b"\x1d\x77\x03";
pub const BARCODE_UPC_A: &[u8] = b"\x1d\x6b\x00"; pub const BARCODE_UPC_E: &[u8] = b"\x1d\x6b\x01"; pub const BARCODE_EAN13: &[u8] = b"\x1d\x6b\x02"; pub const BARCODE_EAN8: &[u8] = b"\x1d\x6b\x03"; pub const BARCODE_CODE39: &[u8] = b"\x1d\x6b\x04"; pub const BARCODE_ITF: &[u8] = b"\x1d\x6b\x05"; pub const BARCODE_NW7: &[u8] = b"\x1d\x6b\x06";
pub const TYPE_PDF417: &[u8] = b"\x1dZ\x00"; pub const TYPE_DATAMATRIX: &[u8] = b"\x1dZ\x01"; pub const TYPE_QR: &[u8] = b"\x1dZ\x02";
pub const CODE2D: &[u8] = b"\x1bZ";
pub const QR_LEVEL_L: &[u8] = b"L"; pub const QR_LEVEL_M: &[u8] = b"M"; pub const QR_LEVEL_Q: &[u8] = b"Q"; pub const QR_LEVEL_H: &[u8] = b"H";
pub const S_RASTER_N: &[u8] = b"\x1d\x76\x30\x00"; pub const S_RASTER_2W: &[u8] = b"\x1d\x76\x30\x01"; pub const S_RASTER_2H: &[u8] = b"\x1d\x76\x30\x02"; pub const S_RASTER_Q: &[u8] = b"\x1d\x76\x30\x03";
pub const BITMAP_S8: &[u8] = b"\x1b\x2a\x00"; pub const BITMAP_D8: &[u8] = b"\x1b\x2a\x01"; pub const BITMAP_S24: &[u8] = b"\x1b\x2a\x20"; pub const BITMAP_D24: &[u8] = b"\x1b\x2a\x21";
pub const GSV0_NORMAL: &[u8] = b"\x1d\x76\x30\x00";
pub const GSV0_DW: &[u8] = b"\x1d\x76\x30\x01";
pub const GSV0_DH: &[u8] = b"\x1d\x76\x30\x02";
pub const GSV0_DWDH: &[u8] = b"\x1d\x76\x30\x03";