Which C# XML documentation comment tag is used for the literals `true`, `false` and `null`?

In Microsoft's own documentation, these literals appear in **bold text**. For example, the documentation for the property [ArrayList.IsFixedSize](http://msdn.microsoft.com/en-us/library/system.collections.arraylist.isfixedsize%28v=vs.110%29.aspx) appears as:

> 
> **true** if the [ArrayList](http://msdn.microsoft.com/en-us/library/System.Collections.ArrayList%28v=vs.110%29.aspx) has a fixed size; otherwise, **false**. The default is **false**.
> 
> 
> 

None of [Microsoft's Recommended Tags](http://msdn.microsoft.com/en-us/library/5ast78ax.aspx) seem to apply to this situation. The best fit appears to be [<c>](http://msdn.microsoft.com/en-us/library/te6h7cxs%28v=vs.120%29.aspx), however `<c>true</c>` appears as `true` when the documentation is rendered by [Doxygen](http://www.doxygen.nl/).

However, using `<b>true</b>` with Doxygen yielded bold text as I surmised that it might. But that leaves me wondering about **the portability of using standard HTML tags** with other documentation generation tools such as [Sandcastle](http://shfb.codeplex.com/) and [GhostDoc](http://www.roland-weigelt.de/ghostdoc/).