- d -
- data : EvalBuilder, Hash
- date : Book, EvalBuilder, Game, HashData, HashTable
- day : Book, Game, WthorHeader
- debug_cassio : Options
- delay : GGSClient
- depth : GameHash, HashData, Hint, Level, Node, Options, Result, Search, WthorHeader
- depth_pv_extension : Search
- discs : GGSMatchType