[NTG-context] How to set paths

Hello! In some special cases I need to set paths for input files directly from ConTeXt code not from config file. In manuals \setupexternalfigures is described. Is there any similar command for files that are inputed directly by \input, \typefile \processXMLfile (the last is the most interesting for me) and similar commands? If there isn't any special command for that, how to do that using some abrakadabra:-) Regards, Pawe/l