"Settings -> Editor... -> General settings -> [Other settings ->] Editor title is the file's -> name only (no path information)"
Oh, apologize for this newbee question...and Thanx
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There is  no wxAUI_NB_LEFT in 2.9.1
http://docs.wxwidgets.org/2.9.1/classwx_aui_notebook.html :
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Styles
This class supports the following styles:
    wxAUI_NB_DEFAULT_STYLE:
    Defined as wxAUI_NB_TOP | wxAUI_NB_TAB_SPLIT | wxAUI_NB_TAB_MOVE | wxAUI_NB_SCROLL_BUTTONS | wxAUI_NB_CLOSE_ON_ACTIVE_TAB.
    wxAUI_NB_TAB_SPLIT:
    Allows the tab control to be split by dragging a tab.
    wxAUI_NB_TAB_MOVE:
    Allows a tab to be moved horizontally by dragging.
    wxAUI_NB_TAB_EXTERNAL_MOVE:
    Allows a tab to be moved to another tab control.
    wxAUI_NB_TAB_FIXED_WIDTH:
    With this style, all tabs have the same width.
    wxAUI_NB_SCROLL_BUTTONS:
    With this style, left and right scroll buttons are displayed.
    wxAUI_NB_WINDOWLIST_BUTTON:
    With this style, a drop-down list of windows is available.
    wxAUI_NB_CLOSE_BUTTON:
    With this style, a close button is available on the tab bar.
    wxAUI_NB_CLOSE_ON_ACTIVE_TAB:
    With this style, the close button is visible on the active tab.
    wxAUI_NB_CLOSE_ON_ALL_TABS:
    With this style, the close button is visible on all tabs.
    wxAUI_NB_TOP:
    With this style, tabs are drawn along the top of the notebook.
    wxAUI_NB_BOTTOM:
    With this style, tabs are drawn along the bottom of the notebook.
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