deletions | additions       diff --git a/Concepts.tex b/Concepts.tex  index c8520b3..d0b86a0 100644  --- a/Concepts.tex  +++ b/Concepts.tex 
...
dplot(d, timetrace)  \end{lstlisting}  The function \verb|dplot| is the generic plot function function,  which creates figure and handles details common to all the plotting functions (for instance instance,  the title). \verb|d| is the \verb|Data| variable and \verb|timetrace| is the actual plot  function function,  which operates on a single channel. In multi-spot measurements multispot measurements,  \verb|dplot| creates one subplot for each spot and calls \verb|timetrace| for  each channel. 
...
the interactive backend with the command \verb|%matplotlib notebook|.  Another option is displaying figures in a new standalone window  using a desktop graphical library such as QT4.  In this case case,  the command to be used is \verb|%matplotlib qt|. A few plot functions functions,  such as \verb|timetrace| and \verb|hist2d_alex| \verb|hist2d_alex|,  have interactive features which require the QT4 backend. As an example, after switching to the QT4 backend  the following command: 
...
dplot(ds, hist2d_alex, gui_sel=True)  \end{lstlisting}  The values that which  identify the region are printed in the notebook and can be passed to the function \verb|select_bursts.ES| to select bursts inside that region  (see section~\ref{sec:burstsel}).