And adds an icon to the toolbar plus a Summarize command in the Tools and Context menus. In Word, you get an icon and a Summarize command in the Tools menu. Outlook has a Summarize icon on the main toolbar. Summarizer allows you to set the number of concepts within a document. While the default is 10, the other two ends of the spectrum are 5 and 30.
Adjustment is done by a slider control.
The accompanying documentation advises against summarizing documents with multiple subjects. Instead, it recommends selecting a portion to be summarized. And if you look closely on the status bar, the word count as well. You can export a summary to .HTML, .RTF and .TXT formats. The product also has pretty good security.