basically, title asks:
what point of journal property? msdn doesn't explain it's actual usefulness.
this nicely explained blog post, or on official msdn page.
to summarize though:
windows presentation foundation (wpf) supports browser-style navigation can used in 2 types of applications: standalone applications , xaml browser applications (xbaps). package content navigation, wpf provides page class. can navigate 1 page declaratively, using hyperlink, or programmatically, using navigationservice. wpf uses journal remember pages have been navigated , navigate them.
...
if need remember small pieces of state across page navigations, can use dependency properties (see dependencyproperty) configured frameworkpropertymetadata.journal metadata flag.
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