Chapter & Section Title is Bolded

My company just upgraded to Lectora 2008 & I am updating one of my courses. When I opened it up, one of my Chapters, a section in that chapter & 1 page in the chapter are now in bold. Can anyone help me out with what this means? My company just upgraded to Lectora 2008 & I am updating one of my courses. When I opened it up, one of my Chapters, a section in that chapter & 1 page in the chapter are now in bold. Can anyone help me out with what this means?

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