what does *~ mean in glob?

What is the meaning of *~ in glob syntax? For example, in a sample .hgignore file:

syntax: glob

.DS_Store
*.swp
*~.nib

what is diff开发者_JS百科erence between a *~.nib and *.nib ? Thanks

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*~ means files end with ~, mostly used as temporary backup files by IDEs and text editors.