\helpref{IsSelected}{wxtreectrlisselected},
\helpref{IsVisible}{wxtreectrlisvisible}, \helpref{IsBold}{wxtreectrlisbold}
and \helpref{IsExpanded}{wxtreectrlisexpanded}. Only one item at a time may be
-selected, selecting anopther one (with
+selected, selecting another one (with
\helpref{SelectItem}{wxtreectrlselectitem}) automatically unselects the
previously selected one.
EVT\_TREE\_ITEM\_EXPANDING event is received: then all items lying immediately
under the item being expanded should be added, but, of course, only when this
event is received for the first time for this item - otherwise, the items would
-be added twice if the user expands/collapses/reexapnds the branch.
+be added twice if the user expands/collapses/re-expands the branch.
The tree control provides functions for enumerating its items. There are 3
groups of enumeration functions: for the children of a given item, for the