Template:Part

{{#ifeq: | |

 {{#ifeq:   | |
   === Usage Error! === |
   === Part {{{number}}} ===
 }} | 
 {{#ifeq:   | |
    === {{{name}}} === |
    === Part {{{number}}}: {{{name}}} === 
 }}

}}

Usage:

{{part|name=Name|number=Number}}

You can omit the parameters (as shown), but this gives you a "usage error" for the heading.

(As you can see, four or more headings automatically creates a Table of Contents.)

{{part}} nets you:

Usage Error!

{{part|number=1}} nets you:

Part 1

{{part|name=Test}} nets you:

Test

{{part|name=Test|number=1}} nets you: