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I have various files in which I think the anonymous block editing function is not enabled, could you modify them?  can i attach?

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Try to rename it with THIS PROGRAM then you would be able to modify it I believe.

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Tharwat's program with the dialog box looks slicker, but here's an oldie that I got by with for many years:

;    UnAnon.Lsp  http://www.davidbethel.com/lisp/ Jul 05, 1998
(princ "\nCopyright (C) 1998, David Bethel owner of Fabricated Designs, Inc.")
(princ "\nLoading UnAnon v1.0 ")
(setq uan_ nil lsp_file "UnAnon")

;================== For Automated Calling From Another Program =========
(defun uan_auto (ar1) (UnAnon ar1))

;================== Macros =============================================
(defun PDot ()(princ "."))

(PDot);++++++++++++ Set Modes & Error ++++++++++++++++++++++++++++++++++
(defun uan_smd ()
 (setq olderr *error*
      *error* (lambda (e)
                (and (/= e "quit / exit abort")
                     (princ (strcat "\nError: *** " e " *** ")))
                (command-s "_.UNDO" "_END" "_.U")
       uan_var '(
  ("CMDECHO"   . 0) ("MENUECHO" . 0) ("MENUCTL"   . 0) ("MACROTRACE" . 0)
  ("OSMODE"    . 0) ("SORTENTS" . 119)("MODEMACRO" . ".")
  ("BLIPMODE"  . 0) ("EXPERT"   . 0) ("SNAPMODE"  . 1) ("PLINEWID"   . 0.0)
  ("ORTHOMODE" . 1) ("GRIDMODE" . 0) ("ELEVATION" . 0) ("THICKNESS"  . 0)
  ("FILEDIA"   . 0) ("FILLMODE" . 0) ("SPLFRAME"  . 0) ("UNITMODE"   . 0)
  ("TEXTEVAL"  . 0) ("ATTDIA"   . 0) ("AFLAGS"    . 0) ("ATTREQ"     . 1)
  ("ATTMODE"   . 1) ("UCSICON"  . 1) ("HIGHLIGHT" . 1) ("REGENMODE"  . 1)
  ("COORDS"    . 2) ("DRAGMODE" . 2) ("DIMZIN"    . 1) ("PDMODE"     . 0)
 (foreach v uan_var
      (setq m_v (cons (getvar (car v)) m_v)
            m_n (cons (car v) m_n))
      (setvar (car v) (cdr v)))
 (princ (strcat (getvar "PLATFORM") " Release " (substr (ver) 18 2)
   " -  Convert To Anonymous Blocks ....\n"))

(PDot);++++++++++++ Return Modes & Error +++++++++++++++++++++++++++++++
(defun uan_rmd ()
  (setq *error* olderr)
  (mapcar 'setvar m_n m_v)
  (command-s "_.UNDO" "_END")

(PDot);++++++++++++ Set And Start An Undo Group ++++++++++++++++++++++++
(defun SetUndo ()
 (and (zerop (getvar "UNDOCTL"))
      (command-s "_.UNDO" "_ALL"))
 (and (= (logand (getvar "UNDOCTL") 2) 2)
      (command-s "_.UNDO" "_CONTROL" "_ALL"))
 (and (= (logand (getvar "UNDOCTL") 8) 8)
      (command-s "_.UNDO" "_END"))
 (command-s "_.UNDO" "_GROUP"))

(PDot);++++++++++++ Get Entity Name ++++++++++++++++++++++++++++++++++++
(defun GetOne (/ st os)
 (setq os (getvar "SNAPMODE") s nil)
 (setvar "SNAPMODE" 0)
 (while (not st)
        (setq st (ssget)))
 (while (> (sslength st) 1)
        (setq st nil)
        (princ "\nOnly 1 At A Time Please\n")
        (while (not st)
               (setq st (ssget))))
 (setvar "SNAPMODE" os)
 (setq s (ssname st 0)))

(PDot);++++++++++++ Convert An Anonymous Block To Named Block ++++++++++
(defun UnAnon (b / tdef en ed bc bn bd in)          ;Supply ename
  (setq bn "TEMP1" bc 1)
  (while (tblsearch "BLOCK" bn)
         (setq bc (1+ bc) bn (strcat "TEMP" (itoa bc))))
  (and (= (type b) 'ENAME)
       (setq bd (entget b)
             in (cdr (assoc 2 bd))))
  (if (or (not bd)
          (not in)
          (/= "INSERT" (cdr (assoc 0 bd)))
          (/= "*U" (substr in 1 2))
          (= (logand (cdr (assoc 70 (tblsearch "BLOCK" in)))  4)  4)
          (= (logand (cdr (assoc 70 (tblsearch "BLOCK" in))) 16) 16)
          (= (logand (cdr (assoc 70 (tblsearch "BLOCK" in))) 32) 32))
         (princ "*** Not An Anonomymous Block *** ")
         (setq bn nil bc nil bd nil in nil b nil)
  (setq tdef (tblsearch "BLOCK" in)
          en (cdr (assoc -2 tdef))
          ed (entget en))
  (entmake (list (cons 0 "BLOCK")
                 (cons 2 bn)
                 (cons 70 0)
                 (cons 10 (cdr (assoc 10 tdef)))))
  (entmake ed)
  (while (setq en (entnext en))
         (setq ed (entget en))
         (entmake ed))
  (entmake (list (cons 0 "ENDBLK")))
  (setq bd (subst (cons 2 bn) (assoc 2 bd) bd))
  (entmod bd)
  (entupd b)
  (princ (strcat "\n" bn)))

(PDot);************ Main Program ***************************************
(defun uan_ (/ m_v m_n olderr uan_var s)
  (UnAnon s)

(defun c:UnAnonall (/ ss i)
 (setq ss (ssget "X" (list (cons 0 "INSERT")(cons 67 (if (= (getvar "TILEMODE") 1) 0 1)))))
 (and ss
   (setq i (sslength ss))
   (while (not (minusp (setq i (1- i))))
          (setq en (ssname ss i))
          (if (= "*U" (substr (cdr (assoc 2 (entget en))) 1 2))
              (UnAnon en))))

(PDot);************ Load Program ***************************************
(defun C:UnAnon () (uan_))
(if uan_ (princ "\nUnAnon Loaded\n"))
;================== End Program ========================================

I used to get a lot of these from Autoturn generated Vehicle Paths, but haven't seen any since switching to AutoCAD's Vehicle Tracking so I haven't had a chance to test Tharwat's program on one.  Let us know how it works.

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In BricsCAD can you use vla-put-name to rename an anonymous block definition. Apparently this is not possible in AutoCAD.

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