Literal
Literals are notation for defining fixed values.
Python Example
# Python supports string and numeric literals.
# By convention, the literal names are fully capitalized.
BINARY_LITERAL = 0b1011
FLOAT_LITERAL_1 = 20.22
FLOAT_LITERAL_2 = 2.7e2
STRING_LITERAL = "This is a string."
# Print the literals.
print(BINARY_LITERAL, FLOAT_LITERAL_1, FLOAT_LITERAL_2, STRING_LITERAL)