List.Direction property
Gets or sets a value that specifies the reading order of the list.
It must conform to the following ABNF: Direction = “NONE” | “LTR” | “RTL”.
I would like to know the exact meaning of direction. Because this may help to solve this issue: Webpart cannot be seen on page after adding. Error in ULS. Feature (wsp) = Webpart+ListInstance
Reference: http://joost.haneveer.nl/sharepoint/localized-resource-for-token-direction-could-not-be-found/