signchart2 directive

signchart2 is an alias for signchart-2.

Generates an enhanced sign chart with broader function support.

Example

```{signchart2}
---
function: sin(x)*cos(x), f(x)
domain: (-3.5, 3.5)
factors: true
width: 100%
---
```

Use the canonical page for full details: signchart-2.