If I want the home page layout different than content pages...

{{header}}
{{content-home}}
{{footer}}

{{header}}
{{content}}
{{footer}}

{{header}}
[+phx:if=`[*id*]`:is=`1`:then=`{{content-home}}`:else=`{{content}}`+]
{{footer}}

<!-- start content area -->
    <div id="innerwrap">
        <div id="content"> <p>[*#content*]</p> </div>
        <div id="right"><p>right content here</p></div>
    </div>
   <!-- end content area -->

<!-- start content area -->
    <div id="innerwrap">
        <div id="content">[*#content*]</div>
        <div id="right">[*rightContent*]</div>
    </div>
<!-- end content area -->

<!-- start content area -->
    <div id="innerwrap">
        <div id="content"> <p>[*#content*]</p> </div>
        
    </div>
   <!-- end content area -->

$TempId = $modx->documentObject['template'];
if ($TempId=="1")
  $output="{{homeContent}}"; 
elseif ($TempId=="2")
   $output="{{template2Content}}";
else
   $output="{{template3Content}}";
return "$output";