More detail to my question:
C# and VB in the code behind files are termed "server-side code".
So what is inline-asp, and 'runat=server' code blocks called?
<!-- This is called "client-side" -->
// This is called "server-side"
public void Page_Load(object sender, EventArgs e)
<%-- What is this called ??? --%>
<asp:Label ID="MyLabel" runat="server" />
<% Response.Write("Hello World"); %>
To be explicit, Microsoft calls them Embedded Code Blocks.
They are code blocks embeded into the page lifecycle by being called during the Render phase.