Help Finding a Part of My Code

Hi,
I’m having trouble with my tinymce and on the forums there I was asked to show a piece of code which looked like this:

<!-- tinyMCE -->
<script language="javascript" type="text/javascript">
    tinyMCE.init({
        mode : "textareas",
        theme : "advanced"
    });
</script>
<!-- /tinyMCE -->

However, when I go to the write post page and view source, I don’t see anything like that. I’m new to code so will someone please tell me where to find this or what it’s equivalent looks like. Thanks