+filter="$(REF f)"
+order="$(REF o)"
+
+if mkdir "$lock" 2>&-; then
+ cp "$cardfile" "$tempfile"
+ REDIRECT "/cards/?o=${order}&f=${filter}&e=${card}"
+else
+ SET_COOKIE session message="EDITLOCK"
+ REDIRECT "/cards/?o=${order}&f=${filter}#${card}"
+fi