Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

### - q -

- quantifier : CargoSpec
- quantity_sea_lakes : DifficultySettings
- query_widget : NewGRFWindow
- QueryNewTileTrackStatus() : CFollowTrackT< Ttr_type_, VehicleType, T90deg_turns_allowed_, Tmask_reserved_tracks >
- QueryString() : QueryString
- quick_goto : GUISettings
- quit_thread : GenWorldInfo