Here is a list of help pages:

ActiveGroup
ActiveGroupChanged
Add2Button
AddButton
AddGroup
Appearance
BorderStyle
BtnCapAlignment
ButtonAdded
ButtonAppearance
ButtonBackColor
ButtonBackgroundLayout
ButtonBackgroundPicture
ButtonCaptionAlignment
ButtonClick
ButtonClickBehavior
ButtonFlow
ButtonForeColor
ButtonGradientColor
ButtonGradientType
ButtonHeight
ButtonHighlightChanged
ButtonHighlightStyle
ButtonHighlightZone
ButtonLayout
ButtonMoved
ButtonPicture
ButtonPictureMaskColor
ButtonRemoved
Buttons
ButtonSelectionChanged
ButtonSetNewIndex
ButtonSize
ButtonTextPosition
ButtonTooltipText
ButtonWidth
Caption
CButton
CButtons
CGroup
CGroups
ClearButtons
CloseButtonClick
CountButton
CountGroup
Distributing_VLButtonBar
Font
GroupAdded
GroupAppearance
GroupBackColor
GroupCaptionAlignment
GroupFlow
GroupForeColor
GroupGradientColor
GroupGradientType
GroupRemoved
Groups
GroupSetNewIndex
GrpCapAlignment
HighlightedButtonBackColor
HighlightedButtonForeColor
IndexButton
IndexGroup
Installation
Introduction
ItemButton
ItemGroup
Key
Language
license
LockRefresh
Logo
master.js
MouseDown
MouseMove
MouseUp
NewIndexButton
OLECompleteDrag
OLEDragDrop
OleDragMode
OLEDragOver
OleDropMode
OLEGiveFeedback
OLEStartDrag
ParentGroup
Prompt
Registration
RemoveButton
RemoveGroup
SelectedButton
SelectedButtonAppearance
SelectedButtonBackColor
SelectedButtonForeColor
ShowAboutBox
ShowButtonInfo
ShowCaptionBar
ShowCloseButton
Tag
Technical_Support
TooltipStyle
TooltipText
Unicode
UseMnemonic
Visible
VLButtonBar
WhatIsNew