Brace matching
Automatic brace matching gives you immediate feedback on misplaced brackets or open-ended code segments. Automatic brace matching recognizes all brackets types, quotes, and structures defined in the language specification. When you type a closing bracket, both it and its matching bracket remain highlighted until you type another key or move the cursor (same works for open/close structures). This makes visually identifying code blocks much easier. In addition, this may help identify mismatched or missing brackets and structures. Double click on open/close structure tag will navigate you to matching the close/open tag in the document.
You can enable the feature in Options->Code Completion.
Configuration
You can configure symbols that should be highlighted in OpenClose node of syntax specification.