Reserved zettel identifier
Zettel identifier are typically created by examine the current date and time. By renaming1 a zettel, you are able to provide any sequence of 14 digits2. If no other zettel has the same identifier, you are allowed to rename a zettel.
To make things easier, you must not use zettel identifier that begin with four zeroes (0000).
All zettel provided by an empty zettelstore begin with six zeroes3. Zettel identifier of this manual have be chosen to begin with 000010.
However, some external applications may need at least one defined zettel identifier to work properly. Zettel Zettelstore Application Directory (00009999999998) can be used to associate a name to a zettel identifier. For example, if your application is named “app”, you create a metadata key app-zid. Its value is the zettel identifier of the zettel that configures your application.
Reserved Zettel Identifier
| From | To | Description |
| 00000000000000 | 0000000000000 | This is an invalid zettel identifier |
| 00000000000001 | 0000099999999 | Predefined zettel |
| 00001000000000 | 0000109999999 | This Zettelstore manual |
| 00001100000000 | 0000899999999 | Reserved, do not use. |
| 00009000000000 | 0000999999999 | Reserved for applications (legacy) |
Since the format of zettel identifier will change in the near future, no external application is allowed to use the range 00000000000001 … 0000999999999.
External Applications (Legacy)
| From | To | Description |
| 00009000001000 | 00009000001999 | Zettel Presenter, an application to display zettel as a HTML-based slideshow |
- The rename operation id deprecated and will be removed in version 0.19 or later. ↩︎
- Zettel identifier format will be migrated to a new format after version 0.19. ↩︎
- Exception: the predefined home zettel 00010000000000. But you can configure another zettel with another identifier as the new home zettel. ↩︎