diff --git a/members-base.scm b/members-base.scm
index c0788ae..8e04913 100644
--- a/members-base.scm
+++ b/members-base.scm
@@ -119,15 +119,30 @@
  ;; Returns dictionary containing only records with either 4-digit
  ;; name or one of its aliases being 4-digit.
  (define (files-dictionary-filter-4digit-symbols d)
-   d)
+   (let loop ((keys (dict-keys d))
+	      (res (make-dict)))
+     (if (null? keys)
+	 res
+	 (let* ((key (car keys))
+		(val (dict-ref d key)))
+	   (loop (cdr keys)
+		 (if (list-contains-4digit-symbol? (cons key val))
+		     (dict-set res key val)
+		     res))))))
+
+ ;; Returns a dictionary containing file-name, symlinks, id and info
+ ;; keys. The info key contains whatever load-member-file from the
+ ;; member-file module returns. The id key contains whatever is the
+ ;; first 4-digit symbol in (cons fname aliases) list.
+ (define (members-base-load-member mdir fname aliases)
+   #f)
 
  (define (load-members dn)
    ;; get the directory contents
-   (let ((fss (files+symlinks->files-dictionary
-	       (get-files+symlinks dn))))
-     (print (map length fss)))
-   ;; filter all ids
-   ;; resolve links (it might be unknown!)
+   (let ((fss (files-dictionary-filter-4digit-symbols
+	       (files+symlinks->files-dictionary
+		(get-files+symlinks dn)))))
+     (void))
    ;; load member files
    1)