Using razor within an Umbraco template

Normally you restrict use of razor to the scripting folder in the developer tab and expose them via macros, but you can also use them inside a template by creating an inline macro like so:

<umbraco:Macro runat="server" Language="razor">
@{
    // insert razor here
    var href = "index.htm";
    <a href="@href">Home</a> 
} 
</umbraco:Macro>

This should only be done for small one-offs where you are unlikely to need to reuse the functionality, such as loading in the page title. Keep anything greater than that in the scripting folder.