There are well over 200 commands built into the MPE/iX operating system. Some are as simple as SHOWME. The SHOWME command requires only that you enter its name at the prompt and press Return:
Others are more involved, and some of them are complex.
A "simple" command does one or two things and does not offer much flexibility in its execution. A "complex" command may do one thing--or many things. In addition, a complex command usually permits you to specify in great detail exactly what the command will do and how it will do it.
Some programs, such as HP Easytime/iX or EDIT/3000, automatically call upon complex commands and permit you to accomplish what you want to do without having to understand the command in all its complexity. The EDIT/3000 program creates text files for you and gives you a way to change these files as you need.
You may want to rely on HP Easytime/iX or other programs to do most of your work on the computer. In some situations, however, no program will accomplish precisely what you intend.
The commands built into MPE/iX provide tools to accomplish those ends with almost any degree of that control that you might wish to exercise.
