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renameAttr
nodeName.oldAttrName newAttrName
renameAttr is undoable, queryable, and editable.
Renames the given user-defined attribute from oldName to newName. If the new name conflicts with an existing name then this command will fail. Note that it is not legal to rename an attribute to the empty string.sphere -n sph; addAttr -sn ms -ln mass -dv 1.0 -min 0.001 -max 10000; renameAttr sph.mass length; renameAttr sph.ms ln;