- Method Calls

### Method Calls

A "hole" in an HTML (or XML) file is filled by a call to a method of an extension. A call to method METHODNAME has elementary syntax:

>     <call METHODNAME >

Note that the <call> must be on its own line and that a space must separate the end of a method name from the terminating right-widget (">").

The semantics of a call is to replace the call with the body of the method in the document that extends the current document. If a call is made to method M and M is not defined in the extension document, XC throws an error.