Choosing Buffering Techniques and GET/PUT Processing Modes

As you can see from the previous examples, the most efficient code is achieved by using automatic buffer pool construction, and GET-locate and PUTX-output with simple buffering. Table 1 summarizes the combinations of buffering techniques and processing modes you might use:

Table 1. Buffering Technique and GET/PUT processing modes
		Simple Input Buffering
Actions	GET-move PUT-locate	GET-move PUT-move	GET-locate PUT-locate	GET-locate PUT-move	GET-locate (logical record), PUT-locate
Program must move record			X		X
System moves record	X	X		X
System moves record segment					X
Work area required		X
PUTX-output can be used				X