### Load Diagram from File

Source: https://docs.rs/aquamarine/0.6.0/aquamarine/index.html

Use the include_mmd! macro to reference external diagram files and keep doc comments clean.

```rust
/// Diagram #1
/// include_mmd!("diagram_1.mmd")
///
/// Diagram #2
/// include_mmd!("diagram_2.mmd")
```

--------------------------------

### Custom Mermaid Theme

Source: https://docs.rs/aquamarine/0.6.0/aquamarine/index.html

Apply custom styling to a diagram using the %%init%% attribute within the mermaid code block.

```mermaid
/// ```mermaid
/// %%{init: {
///     'theme': 'base',
///     'themeVariables': {
///            'primaryColor': '#ffcccc',
///            'edgeLabelBackground':'#ccccff',
///            'tertiaryColor': '#fff0f0' }}}%%
/// graph TD
///      A(Diagram needs to be drawn) --> B{Does it have 'init' annotation?}
///      B -->|No| C(Apply default theme)
///      B -->|Yes| D(Apply customized theme)
/// ```
```

--------------------------------

### Using the #[aquamarine] attribute macro

Source: https://docs.rs/aquamarine/0.6.0/aquamarine/attr.aquamarine.html

How to apply the aquamarine attribute to a struct or item to enable Mermaid diagram rendering in documentation.

```APIDOC
## #[aquamarine]

### Description
Applies the aquamarine proc-macro to an item, enabling the rendering of Mermaid diagrams within the item's documentation.

### Usage
Place the `#[aquamarine]` attribute above the item (e.g., struct, function) and include a `mermaid` code block within the doc comments.

### Example
```rust
#[aquamarine]
/// ```mermaid
///   graph TD;
///     A-->B;
/// ```
struct Foo;
```
```

--------------------------------

### Inline a Mermaid diagram in rustdoc

Source: https://docs.rs/aquamarine/0.6.0/aquamarine/attr.aquamarine.html

Use the mermaid code block syntax within documentation comments to render diagrams.

```rust
#[aquamarine]
/// ```mermaid
///   --- here goes your mermaid diagram ---
/// ```
struct Foo;
```

--------------------------------

### Inline Mermaid Diagram

Source: https://docs.rs/aquamarine/0.6.0/aquamarine/index.html

Use the #[aquamarine] attribute on a function and a mermaid code block in the doc-string to render a diagram.

```rust
#[cfg_attr(doc, aquamarine)]
/// ```mermaid
/// graph LR
///     s([Source]) --> a[[aquamarine]]
///     r[[rustdoc]] --> f([Docs w/ Mermaid!])
///     subgraph rustc[Rust Compiler]
///     a -. inject mermaid.js .-> r
///     end
/// ```
pub fn example() {}
```

--------------------------------

### Apply the aquamarine attribute macro

Source: https://docs.rs/aquamarine/0.6.0/aquamarine/attr.aquamarine.html

Apply the attribute to a struct or item to enable Mermaid diagram support.

```rust
#[aquamarine]
```

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