diff --git a/CHANGELOG b/CHANGELOG
index 5c63159..9d52a92 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,14 +1,30 @@
-Version 0.9.0 prerelease (2009.10.18):
+Version 0.9.0 prerelease (2009.11.01):
     * fixed:   when 'C' button was pressed, the cursor was not put in the edit window
     * added:   Pad window - a multiline edit window
     * added:   Checking for update dialog box
+    * added:   there are some new buttons on the standard tab
+               - (...) - the whole expression is surrounded by brackets
+               - 1/(...)
+               - ;
+               - % - a new percentage operator
+               - floor/ceil/min/max/sqrt/root/gamma
+    * added:   some new options on display tab:
+               - grouping
+               - input decimal point
+               - parameters separated by
     * changed: precision:
                Medium - 512 mantissa,  64  exponent
                Big    - 1024 mantissa, 128 exponent
 
     Changes from TTMath 0.9.0 prerelease relating to TTCalc:
     * added:   operator percentage
-               e.g. 1000-50%=1000-(1000*0,5)=500
+               e.g. 1000-50% = 1000-(1000*0,5) = 500
+    * added:   function frac(x) - returns a value without the integer part
+               (only fraction remains)
+    * changed: algorithms in sqrt(x) and root(x ; n)
+               they were not too much accurate for some integers
+               e.g. Root(16;4) returned a value very closed to 2 but not exactly 2
+
 
 Version 0.8.7 prerelease (2009.09.16):
     * added:   new language: Swedish
diff --git a/help/accuracy.html b/help/accuracy.html
index bb07801..c7bb5f5 100644
--- a/help/accuracy.html
+++ b/help/accuracy.html
@@ -28,7 +28,7 @@ performed on an approximate value and the result is only an approximation too.
 
 <p>
 For example try to calculate: 0.204 - 0.34*0.80 + 0.068, you would expect that the
-result would be: 0 but TTCalc gives you: 3.15544362088404722164691426e-30 which is
+result was 0 but TTCalc gives you: 3.15544362088404722164691426e-30 which is
 a good approximation to the real zero (look at e-30 part which means 10^(-30)).
 </p>
 
diff --git a/help/rounding_functions.html b/help/rounding_functions.html
index 3cdeb42..77f8486 100644
--- a/help/rounding_functions.html
+++ b/help/rounding_functions.html
@@ -10,6 +10,7 @@
 		<param name="Keyword" value="round">
 		<param name="Keyword" value="ceil">
 		<param name="Keyword" value="floor">
+		<param name="Keyword" value="frac">
 	</object>
 </head>
 
@@ -57,6 +58,11 @@ floor(2)=2<br>
 floor(-4.1)=-5<br>
 floor(-4.8)=-5</dd>
 
+<dt>frac(x)</dt>
+<dd>This function returns a value without the integer part - only fraction remains<br>
+frac(45.789)=0.789<br>
+frac(-2.267)=-0.267<br>
+
 </dl>
 
 
diff --git a/src/resource.rc b/src/resource.rc
index fb9c2ba..649ce37 100644
--- a/src/resource.rc
+++ b/src/resource.rc
@@ -220,11 +220,11 @@ BEGIN
                     BS_AUTORADIOBUTTON | BS_LEFT | WS_TABSTOP,21,42,256,10
     CONTROL         "precision 3",IDC_RADIO_PRECISION_3,"Button",
                     BS_AUTORADIOBUTTON | BS_LEFT | WS_TABSTOP,21,73,256,10
-    LTEXT           "info 1",IDC_LABEL_PRECISION_1_INFO,38,24,239,8,NOT 
+    LTEXT           "info 1",IDC_LABEL_PRECISION_1_INFO,34,24,243,8,NOT 
                     WS_GROUP
-    LTEXT           "info 2",IDC_LABEL_PRECISION_2_INFO,38,55,239,8,NOT 
+    LTEXT           "info 2",IDC_LABEL_PRECISION_2_INFO,34,55,243,8,NOT 
                     WS_GROUP
-    LTEXT           "info 3",IDC_LABEL_PRECISION_3_INFO,38,85,239,8,NOT 
+    LTEXT           "info 3",IDC_LABEL_PRECISION_3_INFO,34,85,243,8,NOT 
                     WS_GROUP
 END
 
diff --git a/src/tabs.cpp b/src/tabs.cpp
index e253050..b1f7cd4 100644
--- a/src/tabs.cpp
+++ b/src/tabs.cpp
@@ -1200,6 +1200,12 @@ BOOL WmTabCommand_Press_gamma(HWND hWnd, UINT message, WPARAM wParam, LPARAM lPa
 return true;
 }
 
+BOOL WmTabCommand_Press_sqrt(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
+{
+	InsertText("sqrt()", -1);
+
+return true;
+}
 
 
 
@@ -1263,6 +1269,8 @@ void CreateTabCommandMessagesTable(Messages<BOOL> & cmessages)
 	cmessages.Associate(IDC_BUTTON_EXP, WmTabCommand_Press_exp);
 	cmessages.Associate(IDC_BUTTON_BRACKETS_ALL, WmTabCommand_Press_bracketsall);
 	cmessages.Associate(IDC_BUTTON_1DIV_BRACKETS_ALL, WmTabCommand_Press_1div_bracketsall);
+	cmessages.Associate(IDC_BUTTON_SQRT, WmTabCommand_Press_sqrt);
+
 
 	cmessages.Associate(IDC_BUTTON_ADD_VARIABLE, Variables::WmTabCommand_AddVariable);
 	cmessages.Associate(IDC_BUTTON_EDIT_VARIABLE, Variables::WmTabCommand_EditVariable);