The instructions Adobe posted for Robohelp 10 are as follows:
The new style sheet (default.css) is the default until you create a style sheet or link another style sheet to a new topic.
The problem is, I don't have the Style Sheet icon (shown in Step 1) on my formatting menu, or any other menu. The closest thing I have is the Properties of Selected Item icon, which opens to your style sheets when you click it from a topic. However, there is no "Copy Styles From" selection on any tab, or in any dropdown.
I can copy the .css file and give it a new name, attach it to a topic and edit the attributes of the styles and hence create a new style sheet. But if Adobe says there's a way to do it within Robohelp with a "Copy Styles From" selection, I'd like to know how it works. Does anyone know where it is? Thanks!