Helptrix Author window has menu and toolbars on the top, the rest of the window is divided to two parts - table of content (ToC) on the left and editing pane on the right. At the very bottom of the screen is the status bar.

Figure 2.1. Helptrix Author window

All changes to the book structure (inserting and deleting chapters or topics, changing their properties) take place on left side in table of content (ToC). Editing of the topic content (writing texts, inserting images, etc.) takes place on the right side.