relocatable address

The address generated by the compiler are relocatable addresses.
See : Introduction to computer-based imaging systems By Divyendu Sinha, Edward R. Dougherty , page.213 :

Assuming the page size as 64 KB (2¹⁶):
The compiler generated relocatable addresses as if the entire program were to be loaded at once. The page number and offset can be easily computed from the relocatable address. Since the offset must be a nonnegative number smaller than the page size, the offset is the least significant 16 bits of the relocatable address. The remaining 25-16 = 9 bits specify the page number. Consider the relocatable address 145678. Since

145678 (decimal) = 0 00000010 00111001 00001110 (binary),
we have the page number as 2 (or 000000010 in binary) and the offset as 14,606( or 0011100100001110 in binary).

If the page size is changed later on to 32KB, programs need not be recompiled to run on the system. Computation of page number and offset is done by the memory manager