diff --git a/doc/manual.md b/doc/manual.md
index 97df9fb..ed49911 100644
--- a/doc/manual.md
+++ b/doc/manual.md
@@ -78,7 +78,7 @@ textSize, textLen, backgroundColor, encoding are optional.
 
 ### `DrawLine(x1, y1, x2, y2)`
 
-### `DrawRectangle(x, y, w, h color)`
+### `DrawRectangle(x, y, widht, height, color)`
 
 ### `ReadPoint(x, y)`
 
@@ -86,10 +86,17 @@ return color
 
 ## Buttons
 
+### `DefineButton(x, y, widht, height, id, color)`
+
+### `DeleteButton(id)`
+
 ### `GetButton()`
 
 return pressed button or nil
 
+### `SetButtonStyle(style)`
+
+
 ### buttons
 
 button's ids that defined default by window with skin
@@ -101,11 +108,48 @@ syscalls.buttons.<Value>
 + `close`
 + `minimize`
 
+### ButtonStyles
+
+```lua
+syscalls.buttonStyle.<Value>
+```
+
 ## SystemColors
 
 ### SystemColors type
 
+userdata 
 
+#### Fields
+
++ frameArea
++ grabBar
++ grabBarButton
++ grabButtonText
++ grabText
++ workArea
++ workButton
++ workButton
++ workButtonText					+ workGraph
++ workText
+
+#### Constructor
+
+```lua
+syscalls.SystemColors.new(
+	frameArea,
+	grabBar,
+	grabBarButton,
+	grabButtonText,
+	grabText,
+	workArea,
+	workButton,
+	workButton,
+	workButtonText,
+	workGraph,
+	workText
+)
+```
 
 ### `GetSystemColors()`