# Reference

Lookup material: glossary, merge fields, SMS message parts and status codes, versions and limits

Material to look up rather than read through. The how-to pages in other sections link here when
they need an exact value, such as a merge field name or an SMS status code.

## The pages

- [Merge Field Reference](/docs/reference/merge-field-reference/): every merge field available in
  reminder templates.
- [SMS Message Parts](/docs/reference/sms-message-parts/): how message length is counted, the
  character sets involved, and why a longer message costs more.
- [SMS Status Codes](/docs/reference/sms-status-codes/): what each delivery status and error code
  means.
- [Versions](/docs/reference/versions/): the difference between Diarybook v8 (Desktop) and v10, and
  what v10 adds.

<!-- Add as each publishes — linking now would 404:
- [Glossary](/docs/reference/glossary/) — the terms these docs use, and what each means.
- [Limits and Fair Usage](/docs/reference/limits-and-fair-usage/) — account limits and the fair usage policy. -->

## Pages in this section

- [Merge Field Reference](https://diarybook.com/docs/reference/merge-field-reference/): The full list of merge fields available in Diarybook reminder templates
- [SMS Message Parts](https://diarybook.com/docs/reference/sms-message-parts/): A look at SMS segments and the gsm, latin and unicode alphabet sets
- [SMS Status Codes](https://diarybook.com/docs/reference/sms-status-codes/): error codes that can occur in diarybook messaging
- [Versions](https://diarybook.com/docs/reference/versions/): 2 different screen sets for diarybook

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Source: https://diarybook.com/docs/reference/