Rocket.Chat/packages/rocketchat-markdown/settings.js

Meteor.startup(() => {
	RocketChat.settings.add('Markdown_Headers', false, {
		type: 'boolean',
		group: 'Message',
		section: 'Markdown',
		public: true
	});

	return RocketChat.settings.add('Markdown_SupportSchemesForLink', 'http,https', {
		type: 'string',
		group: 'Message',
		section: 'Markdown',
		public: true,
		i18nDescription: 'Markdown_SupportSchemesForLink_Description'
	});
});