13 extern const char _openttd_revision[];
14 extern const char _openttd_build_date[];
15 extern const char _openttd_revision_hash[];
16 extern const char _openttd_revision_year[];
17 extern const byte _openttd_revision_modified;
18 extern const byte _openttd_revision_tagged;
19 extern const uint32 _openttd_newgrf_version;
21 bool IsReleasedVersion();