Forward reference is a terminology of coding standards. It is in which a variable is used before declaring it.

When one pass assembler constructing the object code, if it finds usage of the variables before the declaration then forward reference problem will occur.

To avoid forward reference problem:

i) Declare the symbols before using it

ii) Use more than one pass assembler(multi pass assembler)

A palindrome for 'make reference' is 'ecnerfef ekam'. This phrase reads the same backward as it does forward.

Flexion and extension