diff --git a/mg/mglib01.cpp b/mg/mglib01.cpp
index 6aed13609..228044458 100755
--- a/mg/mglib01.cpp
+++ b/mg/mglib01.cpp
@@ -50,18 +50,18 @@ const bool TMag_livelli::enabled(int levnum)
 
 const int TMag_livelli::code_lenght(int levnum)
 {
-	if (levnum<=MANY_MAG_LEV &&  levnum>0)
-		return(_code_lenght[levnum-1]);
-	else
-		return(0)	;
+  if (levnum<=MANY_MAG_LEV &&  levnum>0)
+    return(_code_lenght[levnum-1]);
+  else
+    return(0) ;
 }
 
 const int TMag_livelli::packed_lenght(int levnum)
 {
   int start=0;
-	for (int i=1; i<=levnum && levnum<=MANY_MAG_LEV; i++) 
-		start+=	_code_lenght[i-1];
-	return start;
+  for (int i=1; i<=levnum && levnum<=MANY_MAG_LEV; i++) 
+    start+= _code_lenght[i-1];
+  return start;
 }
 
 
@@ -83,32 +83,32 @@ const TString & TMag_livelli::picture(int levnum)
 
 void TMag_livelli::pack_grpcode(TString & pc, const TString &codlev, const int levnum)
 {
-	pc.overwrite(codlev.left(_code_lenght[levnum-1]),packed_lenght(levnum-1));	    	
+  pc.overwrite(codlev.left(_code_lenght[levnum-1]),packed_lenght(levnum-1));        
 }
 
 TString TMag_livelli::unpack_grpcode(const TString & pc, const int levnum)
 {
-	int start=0;
-	for (int i=1; i<levnum; i++) 
-		start+=	_code_lenght[i-1];
-	if (start>=pc.len())
-		return("");
-	else	 {
-		if (levnum != _last_level && !_enabled[levnum-1])
-			return("");
-		return(pc.mid(start,levnum == _last_level ? -1 : _code_lenght[levnum-1]));
-	}
+  int start=0;
+  for (int i=1; i<levnum; i++) 
+    start+= _code_lenght[i-1];
+  if (start>=pc.len())
+    return("");
+  else   {
+    if (levnum != _last_level && !_enabled[levnum-1])
+      return("");
+    return(pc.mid(start,levnum == _last_level ? -1 : _code_lenght[levnum-1]));
+  }
 }
 
 TString TMag_livelli::build_tabcode(const TString & pc, const int levnum)
 {
-	TString valore;
-	valore << levnum;
-	valore << unpack_grpcode(pc,levnum);
-	if (valore.len()>1) 
-		return valore;
-	else	
-		return "";
+  TString valore;
+  valore << levnum;
+  valore << unpack_grpcode(pc,levnum);
+  if (valore.len()>1) 
+    return valore;
+  else  
+    return "";
 }
 
 // *******************************