+=item version_time_index
+
+Location of the version/time index file. Defaults to
+spool_dir/../versions/idx/versions_time.idx if spool_dir/../versions
+exists; otherwise defaults to undef.
+
+=cut
+
+
+set_default(\%config,'version_time_index', -d $config{spool_dir}.'/../versions' ? $config{spool_dir}.'/../versions/indices/versions_time.idx' : undef);
+
+=item version_index
+
+Location of the version index file. Defaults to
+spool_dir/../versions/indices/versions.idx if spool_dir/../versions
+exists; otherwise defaults to undef.
+
+=cut
+
+set_default(\%config,'version_index',-d $config{spool_dir}.'/../versions' ? $config{spool_dir}.'/../versions/indices/versions.idx' : undef);
+
+=item binary_source_map
+
+Location of the binary -> source map. Defaults to
+spool_dir/../versions/indices/bin2src.idx if spool_dir/../versions
+exists; otherwise defaults to undef.
+
+=cut
+
+set_default(\%config,'binary_source_map',-d $config{spool_dir}.'/../versions' ? $config{spool_dir}.'/../versions/indices/binsrc.idx' : undef);
+
+=item source_binary_map
+
+Location of the source -> binary map. Defaults to
+spool_dir/../versions/indices/src2bin.idx if spool_dir/../versions
+exists; otherwise defaults to undef.
+
+=cut
+
+set_default(\%config,'source_binary_map',-d $config{spool_dir}.'/../versions' ? $config{spool_dir}.'/../versions/indices/srcbin.idx' : undef);
+
+
+