Type of manual this is. You can select one of a preconfigured set of manual types, or select `other', in which case the element's content is used as the description of the manual's type. Otherwise, the element's content may be left empty.
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manualtype |_(#PCDATA)
One of `users', `programmers', `programmers.c', `programmers.fortran', or `other'. If you chose `other', then you should give the manual type as this element's content.