Background colors:

The background colors of the topic and topic header. These colors are only displayed in the compiled Winhelp file, not in the Help & Manual editor. If you open a topic in an external window with a link specifying a secondary help window the target topic will be displayed using the background colors defined for the secondary help window.

Auto-size window height:

Automatically adjusts the height of secondary windows on the basis of their contents. This option is only available for secondary (user-defined) windows, not for the Main window.

Maximize window:

Automatically maximizes the help viewer when it is opened to fill the user's entire screen. Not recommended – the majority of users hate it when help windows do this!

Keep window on top:

Keeps the help window on top of all other windows on the user's screen. Also not recommended. Many users still use small monitors with relatively low resolution and on these systems keeping the help window on top makes it impossible to see the application without closing the help, which is extremely annoying!

Window position and size are absolute:

The Winhelp help viewer normally adjusts window sizes and positions you enter interactively on the basis of the user's monitor size and screen resolution. If you activate this option the values you enter for window position and size will be taken as absolute and will not be adjusted by the help viewer on the user's computer.

It is better to leave this unchecked unless you have a very good reason for using absolute values.

Visible buttons:

These options define the help viewer control buttons to be displayed in the window.

Defaults displays the standard set of controls in the main help viewer. It does not have any effect in secondary (user-defined) windows.

The Browse option which displays Previous/Next browse buttons is only available in secondary (user-defined) windows, not for the Main window. This is because these buttons cannot be disabled for the main help viewer window.

User-defined buttons:

This section allows you to define and display additional buttons of your own, which execute Winhelp macros when the user clicks on them. You must type the macros manually in the Winhelp Macro field.

See the documentation of Microsoft Help Workshop for details of Winhelp macros and how to use them.