Edit Menu

Undo Undo the previous operation.
Redo Redo the previous Undo operation.

Copy Selected Copy the selection to the clipboard.
Paste Paste the copied data to the model. The dialog box gives options of replacing vertices positions in the model or appending to the model as new vertices. Replacing vertices can use a blend factor, so when copying data from 1 frame and pasting to another, you can blend between the two sets of data.
Paste to Range Paste the copied data to a range of frames, optionally with a blend factor as above.

Select All Select all vertices, faces, groups, or bones of the model depending on which mode you are in.
Select None Deselect all vertices, faces, groups, or bones of the model depending on which mode you are in.
Select Inverse Invert the current selection.
Select Connected Select all faces or vertices connected to the current selected set.
Select Touching Select all faces or vertices adjacent to the currently selected set.

Arrange in Groups In groups mode, automatically divide the selected part of the mesh into several triangle groups, dependent on the skin mapping. Every separate region of connected triangles in the skin mapping is converted to a triangle group.
Create Group Creates a new triangle group from the currently selected mesh triangles. If necessary, triangles are split for separating the group from the nonselected mesh.
Groups Merge Combines all selected groups to one single group. Split triangles are not merged together; the Merge button can be used for this.

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