--- a/ListView.st	Fri Sep 02 17:42:50 2016 +0100
+++ b/ListView.st	Thu Sep 08 06:46:20 2016 +0200
@@ -635,13 +635,14 @@
      tabs expanded.
      This behavior is ok in 99.99% of all applications.
      However, you may turn this off iff:
-	- you are certain, that no tabs are in the passed in list
-	- it is very expensive to process the list (for example, because the list
-	  is defined by a virtual array, which computes the lines dynamically, on
-	  the fly).
+        - you are certain, that no tabs are in the passed in list
+        - it is very expensive to process the list (for example, because the list
+          is defined by a virtual array, which computes the lines dynamically, on the fly).
      One use where this flag should be turned off is in the hex-memory display,
      which is able to simulate texts with millions of lines, but they are actually
-     simulated by generating the presented lines dynamically, as they are displayed."
+     simulated by generating the presented lines dynamically, as they are displayed.
+     Notice, that to totally prevent scanning og the whole text, you may have to turn off
+     other flags, such as checkineEndConventionWhenUpdating"
 
     ^ expandTabsWhenUpdating
 !
@@ -653,13 +654,14 @@
      tabs expanded.
      This behavior is ok in 99.99% of all applications.
      However, you may turn this off iff:
-	- you are certain, that no tabs are in the passed in list
-	- it is very expensive to process the list (for example, because the list
-	  is defined by a virtual array, which computes the lines dynamically, on
-	  the fly).
+        - you are certain, that no tabs are in the passed in list
+        - it is very expensive to process the list (for example, because the list
+          is defined by a virtual array, which computes the lines dynamically, on the fly).
      One use where this flag should be turned off is in the hex-memory display,
      which is able to simulate texts with millions of lines, but they are actually
-     simulated by generating the presented lines dynamically, as they are displayed."
+     simulated by generating the presented lines dynamically, as they are displayed.
+     Notice, that to totally prevent scanning og the whole text, you may have to turn off
+     other flags, such as checkineEndConventionWhenUpdating"
 
     expandTabsWhenUpdating := aBoolean
 !

--- a/TextView.st	Fri Sep 02 17:42:50 2016 +0100
+++ b/TextView.st	Thu Sep 08 06:46:20 2016 +0200
@@ -132,7 +132,9 @@
 "
     although textViews (and instances of subclasses) are mostly used
     as components (in the fileBrowser, the browser, the launcher etc.),
-    they may also be opened as a textEditor;
+    they may also be opened as a textEditor. Notice, that usually,
+    instances of one of my subclasses (EditTextView, TextCollector, Workspace)
+    are actually used.
 
     open a (readonly) textView on some information text:
                                                         [exBegin]
@@ -178,8 +180,25 @@
         EditTextView openOn:'Makefile'
                                                         [exEnd]
 
+
+    configuring the TextView to NOT expand tabs and scan for special lines
+    (to avoid reading all lines, when usig a virtualArray)
+                                                        [exBegin]
+        |a m|
+        
+        a := VirtualArray new 
+                setSize:100000000;
+                generator:[:lNr | Transcript show:'called for '; showCR:lNr. 
+                                  'this is line: ',lNr printString ].
+        m := a asValue.        
+        (ScrollableView forView:TextView new) 
+            expandTabsWhenUpdating:false; 
+            checkLineEndConventionWhenUpdating:false;
+            model:m; 
+            open; inspect.         
+                                                        [exEnd]
+
 "
-
 ! !
 
 !TextView class methodsFor:'instance creation'!