{HEAD ~ The device insertion signal} effectively provides {TAIL ~ an indication} that power will be applied to the PCMCIA device 
effectively provides
{ HEAD ~ The device insertion signal } effectively provides { TAIL ~ an indication } that power will be applied to the PCMCIA device
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH