anchor.diff:  ----
   
   
  +== Collapsed Source Blocks
  +
  +Collapsing of source blocks is supported via the custom `collapse` option:
  +
  +[listing]
  +....
  +[source,java,title="Collapsed Source Block",collapse=true]
  +----
  +public class MyCode  {
  +    // long source block that should not be visible by default
  +}
  +----
  +....
  +
  +[source,java,title="Collapsed Source Block",collapse=true]
  +----
  +public class MyCode  {
  +    // long source block that should not be visible by default
  +}
  +----
  +
  +
   == Source Highlighting
   
   AsciiDoc source highlighters (e.g. CodeRay) are not supported, in favor of using the source highlighting
  
positive.code: }
  ----
  
  Collapsing of code block is supported with `collapse` option
  
  [listing]
  ....
  [source,java,title="Some unimportant or lengthy code hidden by default",collapse=true]
  ----
  public class MyCode  {
      // long code block that should not be visible by default
  }
  ----
  ....
  
  [source,java,title="Some unimportant or lengthy code hidden by default",collapse=true]
  ----
  public class MyCode  {
      // long code block that should not be visible by default
  }
  ----
  
  == Source Blocks from External Files (Full Content)
  
  
negative.code: 
  == Line Numbers
  
  Line numbers for source blocks can be enabled either using the `:source-linenums-option:` attribute globally for
  all source blocks on the page, or per source block using the `linenums` option:
  
  [listing]
  