* To erase something copy values to new tree sans the value you want to erase.
*
* Use swap if you need to move the tree to another NetmaskTree instance, it is WAY faster
- * than using copy ctor or assigment operator, since it moves the nodes and tree root to
+ * than using copy ctor or assignment operator, since it moves the nodes and tree root to
* new home instead of actually recreating the tree.
*
* Please see NetmaskGroup for example of simple use case. Other usecases can be found