Use this toAdd a new snippet to the list.
Menu pathFile > Insert > Add New Snippet
Command nameMSnippetNew
Accelerator keyA (from the main menu: Alt+F > I > A)
Keyboard shortcutShift+Ctrl+T
Options on parent menu (Insert+)Insert from File, Insert from URL, Insert Snippet, Snippet Window, Add New Snippet, Edit and Manage Snippets