This is the index page for 13 System expansion.

  • 13.01 Introduction

    The Johnny.Decimal structure is simple by design. But life doesn't always fit in a neat box. I outline three options for system expansion here.

  • 13.11 Multiple systems

    To manage multiple Johnny.Decimal systems, assign an identifier to the front of each one. We refer to this as SYS.AC.ID.

  • 13.12 Guidelines

    Guidelines for assigning identifiers to multiple Johnny.Decimal systems.

  • 13.21 Expand an area

    Some things don't fit in a standard Johnny.Decimal structure. But fear not. By expanding an area, more depth can be created where we need it.

  • 13.31 Extend the end

    To manage more than 100 Johnny.Decimal IDs in a category or an ID that 'repeats' in some way, assign an identifier to the end. We refer to this as AC.ID+SUB.

  • 13.32 Guidelines

    Guidelines for assigning identifiers to the end of an ID in a Johnny.Decimal system.

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