A wiki page is rendered with a translucent background when that page exists only in the browser as a ghost of a page that has been or will soon be.
Proxy Model
See Future Objects for a scenario where such a proxy object is used. **Note**: In that context Ghost is a uniform, light-weight and stratified general purpose proxy model and its implementation in Pharo Smalltalk.
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A link to a non-existent wiki page opens a ghost that offers to create the missing page.
A search creates a ghost with references to pages found in the neighborhood. These can be dragged elsewhere.
A click on a journal action will show a previous revision as a ghost page which can be forked over more recent changes or items dragged as wanted.
A drop on a transporter will create a ghost page from which items can be taken. If the ghost has a desireable name then it can be forked in full as that name.