Computer executable instructions include, for example, instructions and data which cause a general purpose computer, special purpose computer, or {HEAD ~ special purpose processing device} to perform {TAIL ~ a certain function} or group of functions 
Computer executable instructions include , for example , instructions and data which cause a general purpose computer , special purpose computer , or { HEAD ~ special purpose processing device } to perform { TAIL ~ a certain function } or group of functions
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH