Command line arguments that begin with a hyphen are not case sensitive. For example, "-LO" and "-Lo" and "-lo" all mean the same thing. In this manual, group letters are shown in upper case, and the actual arguments are shown in lower case (for example, "-Lo"). This is done merely for clarity.
Other command line arguments are case sensitive if the host machine is case sensitive, otherwise, they are not. For example, on UNIX machines, "ccbl TEST" and "ccbl test" are different commands because the file names "TEST" and "test" are different on UNIX systems. On MS-DOS and VMS systems, these commands are the same because the two file names are treated as the same by the operating system.