-TODO the todo keyword \(string or nil\).
-TODO-TYPE the type of todo \(symbol: `todo', `done', nil\)
-PRIORITY the priority of the headline \(integer or nil\)
-TEXT the main headline text \(string\).
-TAGS the tags string, separated with colons \(string or nil\).
+TODO the todo keyword (string or nil).
+TODO-TYPE the type of todo (symbol: `todo', `done', nil)
+PRIORITY the priority of the headline (integer or nil)
+TEXT the main headline text (string).
+TAGS the tags string, separated with colons (string or nil).