Both the full version of TopStyle and TopStyle Lite offer integration with Allaire HomeSite version 4.01 or later. HomeSite 4.5 includes TopStyle Lite, so integration is automatically enabled by HomeSite. If you're using HomeSite 4.01, you may need to manually enable integration for TopStyle to replace HomeSite's standard style editor. To do this, open TopStyle's Options and make sure to place a checkmark in the "HomeSite Integration" box.
When integration is enabled, TopStyle will be used from within HomeSite whenever a style sheet, style block or style attribute is edited.