OwnBook setting ?

[tissatussa]

hi,

i just compiled your newest master source (on Linux) by just doing make in the src folder. All went well, it created a binary of 1.0 Mb which runs fine. I have the supplied NNUE file and config file arasan.rc in the same folder.

however, i have a question about the settings by the config file arasan.rc . i disabled the opening book by the line book.book_enabled=false but the uci command gives this output :

Arasan v23.5.0-44-g615e8a4 Copyright 1994-2023 by Jon Dart. All Rights Reserved.
uci
id name Arasan v23.5.0-44-g615e8a4
id author Jon Dart
option name Hash type spin default 64 min 4 max 64000
option name Ponder type check default true
option name Contempt type spin default 0 min -200 max 200
option name Use tablebases type check default false
option name SyzygyTbPath type string default syzygy
option name SyzygyUse50MoveRule type check default true
option name SyzygyProbeDepth type spin default 4 min 0 max 64
option name MultiPV type spin default 1 min 1 max 10
option name OwnBook type check default true
option name Favor frequent book moves type spin default 50 min 0 max 100
option name Favor best book moves type spin default 50 min 0 max 100
option name Favor high-weighted book moves type spin default 100 min 0 max 100
option name Randomize book moves type spin default 50 min 0 max 100
option name Threads type spin default 1 min 1 max 256
option name UCI_LimitStrength type check default false
option name UCI_Elo type spin default 3300 min 1000 max 3300
option name Use NNUE type check default true
option name NNUE file type string default arasan-d9-SFv4-20230531.nnue
option name Move overhead type spin default 30 min 0 max 1000
uciok

here, OwnBook is true .. i'd expect it to be false due to my config setting !?