Use double square-brackets.
<div>[[SOME_LANG_CONSTANT]]</div>
<div>${__h("SOME_LANG_CONSTANT")}</div>
var Safe_Html = __h("SOME_HTML");
var Safe_Attr_Value = __a("SOME_STRING");
May break UI, always use __h, __a when possible.
// Function __ is already bound in window object
var Text = __("HELLO_WORLD");