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    Variable CORPUS_DEFAULT_TEXTConst

    CORPUS_DEFAULT_TEXT: "$OPENKA_CORPUS, else $XDG_DATA_HOME/openka, else ~/.local/share/openka"

    Where the corpus is when no path is named, in words — the order resolveCorpusRoot applies, for help texts. ka --help used to leave out the XDG step that every run with XDG_DATA_HOME set actually took.