[MarkFL]

Ah, okay now I know exactly what you mean.

It is likely possible for the standard editor, but it may not be possible for the WYSIWYG editor. I will look into it very soon, and post back what I find.

--------------- Added [DATE]1458100198[/DATE] at [TIME]1458100198[/TIME] ---------------

As I suspected, it won't work with the WYSIWYG editor (it is an inline document), but for the Standard editor you can use the following plugin:

Product: vBulletin

Hook Location: parse_templates

Title: Give Standard Editor Textarea A Placeholder

Execution Order: 5

Plugin PHP Code:

PHP Code:

if (in_array(THIS_SCRIPT, array('showthread', 'newreply', 'newthread')))
$template_hook['footer_javascript'] .= '<script>
window.onload = function(){
    var el = document.getElementsByClassName("cke_source");
    el[el.length - 1].placeholder = "Enter Post Here...";
};
</script>'; 


Plugin is Active: Yes

Click "Save".