[NTG-context] The name of the current section?

Good evening. Is there some command simmilar to \headnumber[section] that would tell me the name of the current chapter/section/...? I want to have the headertext on the left like this: [pagenumber] [chapter title] (chap. [chapter number]) and on the right side like this: [section title] (sec. [section number]) [pagenumber] where [x] is value of x, e.g. [pagenumber] is the number of the current page. How can I do it? Many thanks Michal Kvasnicka