1const decimal_int = 98222;
 2const hex_int = 0xff;
 3const another_hex_int = 0xFF;
 4const octal_int = 0o755;
 5const binary_int = 0b11110000;
 6
 7// underscores may be placed between two digits as a visual separator
 8const one_billion = 1_000_000_000;
 9const binary_mask = 0b1_1111_1111;
10const permissions = 0o7_5_5;
11const big_address = 0xFF80_0000_0000_0000;
12
13// syntax