// ASCII character codes
pub const SPACE: u8 = 32;
pub const LPAR: u8 = 40;
pub const RPAR: u8 = 41;
pub const ASTERISK: u8 = 42;
pub const PLUS: u8 = 43;
pub const MINUS: u8 = 45;
pub const PERIOD: u8 = 46;
pub const SLASH: u8 = 47;
pub const N0: u8 = 48;
pub const N1: u8 = 49;
pub const N2: u8 = 50;
pub const N3: u8 = 51;
pub const N4: u8 = 52;
pub const N5: u8 = 53;
pub const N6: u8 = 54;
pub const N7: u8 = 55;
pub const N8: u8 = 56;
pub const N9: u8 = 57;