- * 1. explicit_dir, when non-empty;
- * 2. executable_dir/redump_dat;
- * 3. current-working-directory redump_dat.
+ * 1. explicit_dir, when non-empty (authoritative);
+ * 2. FRIIDUMP_REDUMP_DAT_DIR, when set (authoritative);
+ * 3. executable_dir/redump_dat (portable and CMake build layout);
+ * 4. executable_dir/../share/friidump/redump_dat (installed Unix layout);
+ * 5. current-working-directory redump_dat.