From Xojo Documentation
The available cursors that can be displayed when the user hovers over the object to which the WebStyle is assigned.
The default cursor is Inherit which means that the cursor will be the same as the cursor of the cursor provided by the WebStyle of the current control's parent control. For example, If a WebStyle uses CrossHair and is assigned to a WebTabPanel, any controls parents to the WebTabPanel will by default also have a CrossHair cursor unless they have a WebStyle assigned to them that uses a different cursor.
This example in the control's Opening event sets the cursor to Help:
Web projects on Linux, macOS and Windows operating systems.