Гарри

{
	"templates": [{
		"title": "Replace content template",
		"description": "This template includes a button, and the label of the button will be replaced on insert.",
		"content": "<button class=\"button\"><span class=\"content-replacement\">[selected content will insert here]</span></button>"
	}],
	"template_selected_content_classes": "content-replacement"
}

[[!TicketForm?
	...
	&validate=`provides:required`
]]

editor.selection.setContent('<div class="work__desc"><p>' + editor.selection.getContent() + '</p></div>');

tinymce.PluginManager.add('mxs_mce_plugin', function(editor, url) {
	editor.ui.registry.addButton('work_desc', {
		text: 'Work desc',
		onAction: function() {
			editor.insertContent('<div class="work__desc"><p>Тут описание</p></div>');
		}
	});
});

[{"title": "None", "value": ""},{"title": "No border", "value": "img_no_border"}]

@SELECT `name`,`id` FROM `[[+PREFIX]]site_htmlsnippets` WHERE `category` = 1