Smart Pie
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The Smart Pie is used together with the Smart mesh tools: Smart Vert, Smart Edge, and Smart Face tools. It allows you to use them all conveniently via a single menu and so a single keymap only.
the Smart Pie with Smart Vert, Smart Edge and Smart Face activated
This pie should be especially useful, if you don't use these tools that often, or struggle with their keymaps.
Preferences
For convenience, the tools' keymaps can easily be disabled in the Smart pie's addon preferences, to free-up "keyboard real-estate".
Toggle the Smart Vert, Smart Edge and Smart Face keymaps individually or all at once from the pie's settings in the addon preferences