The putContent(...) allows HTML content (script, css) to be placed uniquely in the header or near the end of the page.  Returns true for the first call that actually puts the content in the page.

Syntax:
putContent(key, content, atEndOfPage )
putContent(key, array, atEndOfPage )

key.putContent( )

Parameter	Description
key	Content will be placed once for each unique value of key.
content	A String value containing the content to be placed on the page. The content will be placed on this page once based on the key.
array	Content is looked up in the array by the key and then placed in the page using the same key.  Shortcut for putContent(key, array[key]).
atEndOfPage	If true, null, or omitted then place content near end of the page.  Otherwise place content in the header.

Examples:

 

putContent("myHelloWorld", "<script>alert('Hello World')</script>");  //Puts javascript near the end of the page.

"commonCSS".putContent(globalStrings, false);  //shortcut for putContent("commonCSS", globalStrings["commonCSS"], false) which puts the css in the header.

if ("once".putContent(""))  {
  //code in this if block will only run once on the page based on the key "once".
}

B.pageContent()