The following keys, present in jsf/jsf-widgets/src/java/org/sakaiproject/jsf/bundle/pager.properties aren't used:
pager_textStatusZeroItems
pager_textPageSizeAll
pager_titleFirst
pager_titlePrev
pager_titleNext
pager_titleLast

They following are also there and contain unused configutation values:
pager_accesskeys=false
pager_renderFirst=true
pager_renderLast=true
pager_renderPrev=true
pager_renderNext=true