build image selections for region
add uid for DescriptionFromUid
escape value for csv
fix highlighting of selection
source filtering
propagate random id
source filtering

also refactor advancer and remove __IMAGE__ placeholders from template
if unused
image support
source filtering
moved from renderer
get description from uid
match parameterized properties
new
new
description from uid
remove debug exit
label the elements
since no description, link to url
new
support for default args