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If you are changing some options or features that are already in place:
1. Review the information in “Preparing to Administer Your System," page 16.
2. Using the Table of Contents, Index, or page references in “MERLIN
System Features,” page 136, locate the procedure for the option or feature
you want to change and perform the necessary steps in the procedure.
3. If you are making a basic modification to the system—that is, a modifica-
tion that requires changing any of the switch settings on your control unit—
read the information in “Changing Your System Later," page 27.
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