00 01 02 03 04 ; + : and or not { } module submodule yang-version namespace prefix belongs-to organization contact description reference revision import include revision-date extension feature identity typedef grouping augment rpc notification deviation action argument identity if-feature input output container leaf-list leaf list choice anydata anyxml uses case config deviate must when presence refine type units default status bit enum error-app-tag error-message fraction-digits length min-elements max-elements modifier ordered-by path pattern position range require-instance value yin-element base key mandatory unique true false current obsolete deprecated add delete replace not-supported invert-match max min unbounded user binary bits boolean decimal64 empty enumeration int8 int16 int32 int64 string uint8 uint16 uint32 uint64 union leafref identityref instance-identifier 00/* 01 02*/ 03// 04 05((EOL)) 06" 07\ 08" 09' 10\ 11' 12 13 14 15 16 17 18 19 20 21 22 23