Use Case B - Absolute positions

See Regions example.

HTML

outside-region-1
region-source
outside-region-2

word1 outside region outside region outside region outside region outside region outside region outside region outside region outside region word2 outside region outside region outside region outside region outside region outside region outside region outside region outside region word3

word4 inside region inside region inside region inside region inside region inside region inside region inside region inside region inside region word5 inside region inside region inside region inside region inside region inside region inside region inside region inside region inside region word6

word7 outside region outside region outside region outside region outside region outside region outside region outside region outside region word8 outside region outside region outside region outside region outside region outside region outside region outside region outside region word9