When debugging, you use a few common elements in arguments to CodeView commands that are independent of the source language or the current expression evaluator. You often refer to line numbers in source files, and, less often, to lines in text files. You also specify registers and addresses. Some CodeView commands such as Memory Fill (MF) accept address ranges.
This section presents the ways to specify line numbers, refer to objects in memory, and use values stored in the processor registers. It also describes the syntax for memory ranges.