Each section of an assembler language program has a location counter used to assign storage addresses to your program's statements. As the instructions of a source module are being assembled, the location counter keeps track of the current location in storage. You can use a $ (dollar sign) as an operand to an instruction to refer to the current value of the location counter.
Absolute Immediate Addressing.
Relative Immediate Addressing.
bcctr or bcc (Branch Conditional to Count Register) Instruction, bclr or bcr (Branch Conditional Link Register) Instruction, b (Branch) Instruction, bc (Branch Conditional) Instruction.
.using Pseudo-op, .drop Pseudo-op.