mermaid/docs/developer-docs/configuration.md

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# Configuration
When mermaid starts configuration is extracted to a configuration to be used for a diagram. There a 3 sources for configuration:
* The default configuration
* Overrides on the site level, set is set by the initialize call and will be applied for all diagrams in the site/app. The term for this is the **siteConfig**.
* Directives - diagram authors can update select configuration parameters directly int he diagram code via directives and these are applied to the render config.
**The render config** is configration that is used when rendering by applying these configurations.
## Theme configuration
## Starting mermaid
```mermaid
sequenceDiagram
Site->>mermaid: initialize
Site->>mermaid: content loaded
mermaid->>mermaidAPI: init
```
## Initialize
Intialize call is calloed **only once**. It is called by the site integrator in order to override the default configuration on a site level.
## configApi.reset
This method resets the configuration for a diagram to the site configuration, the configuration provided by the site integrator. Before each rendering of a diagram reset is called in the very beginning of render.
##