# Corpus Metadata

- All notes in this Obsidian vault need metadata.
- These metadata need to follow the [Obsidian Front Matter Syntax](../../Content%20Factory/Obsidian%20Front%20Matter%20Syntax.md). 
- Every note will get a field ’notetype’ in its front matter – see below for possible values.

## Notetypes for Obsidian Corpus

Every note will get a field ’notetype’ in its front matter.

The field will have one of the following values:
- guide: guided, hands-on lessons, learning by doing, interactive lessons
- explanation: background and context to the standards, paraphrases of the original standard texts, opinion, discussion, underlying principles, interpretation
- application: steps to solve a specific, real-world problem. Implementing the standard in real world environments, implementation aids, implementation examples, templates, etc.
- reference: for original standard texts, dictionaries, terms and definitions.
- other: for all notes that, by there content, cannot be placed in one for the previous categories.

Note:
- The original standard texts in the OST folder and subfolders are also tagged with “sourcetext”. The body of these notes must never be changed!
- Notes in the iso27DIY-gis/guide folder and subfolders are typically of the guide type.
- Notes in iso27DIY-gis/reference and subfolders are typically of the explanation or application type.