| ${content_refs} - References to Content Chunks
                          Content chunks and variables can be referred to using this format. This is
                          evaluated before any other variable reference is.
                          
                         
                          
                            ${name}
                           
                          Content chunks can refer to other chunks, URLs, or use deferred references,
                          up to 30 levels deep.
                          
                         Default Values
                          If you wish to refer to a content item or variable, but are not sure if it
                          exists, you can provide a default value by following the content name
                          with a question mark and the default value.
                          
                         
                          
                            ${name?defaultvalue}
                           Parameterized References
                          Content references can also be parameterised references; this means
                          that they act like function calls, in a way, allowing you to pass
                          in parameters. They look like this:
                          
                         
                          
                            ${name: parameter="value" ...}
                           
                          The parameters are declared in the XML style.
                          
                         
                          
                            Note: the parameters' values must not contain further content
                             references, due to a limitation in the way WebMake parses
                             content refs. If you want to refer to a content item from
                             within a template, pass in the name of the content item,
                             and get the template to expand it; see the example below.
                            
                           
                          For example, if you set up a template item like this:
                          
                         
                          
                           
	<template name="mytemplate">
		You passed in ${name}, and its value is \"${${name}}\".
	</template>
                        
                        and a content item like this:
                        
                       
                        
                         
	<content name="foo">
		Hi, I'm foo!
	</content>
                      
                      Then a reference to:
                      
                     
                      
                        ${mytemplate: name="foo"}
                       
                      will expand to:
                      
                     
                      
                        **You passed in foo, and its value is \"Hi, I'm foo!\".
                        
                       
                      
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