xload — load a saved graphics
xload(file_name,[win_num])
string, name of the file.
integer, the graphics window number. If not given, the current graphics window is used.
xload reloads the graphics contained in the file
    file_name in the graphics window win_num.
Since Scilab 5.0, all uimenu or uicontrol handles are also loaded.
For files containing graphics, the load function can
    be used instead of xload. xload does not restore
    the window number, the window size nor the window dimensions.