In {TAIL ~ a preferred embodiment}, each of the providers takes {HEAD ~ the form} of a module that can be dynamically linked in at run time, such as a dynamic link library  
In { TAIL ~ a preferred embodiment } , each of the providers takes { HEAD ~ the form } of a module that can be dynamically linked in at run time , such as a dynamic link library
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH