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For example, say you have a feature called F1, for which you have versions a floating installation of version 1.0 and 2.0, and both a node-locked and floating installation of version 2.0. This would appear in Feature lists as follows:
F1_1.0 (Floating)
F1_2.0 (Floating)
F1_2.0 (Nodelocked)
Hiding a feature
You can hide the currently selected feature by clicking the Hide icon in the upper right of the General Information title bar.