opened to run with ruby1.9, (however not all used libraries ported on system)
continue to use ruby1.8 series >= ruby1.8.4

dal, minor changes including
related to bold line instruction and,
variable name change affecting other files

param, header tag for document index, create site index of documents
use, add info on document content, harvest info provided from document set for
metadata to create site index of documents (similar sub-sytax to book index)
also variable name

others variable name change, made earlier in dal and param