deletions | additions       diff --git a/burst-selection.tex b/burst-selection.tex  index d64553a..ad581de 100644  --- a/burst-selection.tex  +++ b/burst-selection.tex 
...
This approach, however, simply truncates the burst distribution with arbitrary  thresholds and is therefore not recommended for quantitative assessment of FRET  populations.  % I don't think that is a very strong statement, in the sense that it is just as ad hoc as the E-S selection method  % and leaves dubious intermediate bursts in the final result  An alternative approach consists in applying two selection filters sequentially.  First, the A-only population is filtered out  %some FRET burst are also filtered out this way  by applying a threshold on the number of photons during donor excitation.  Second, the D-only population is fitlered filtered  out by applying a threshold on the number of photons during acceptor excitation.%same comment as previously  The commands for these combined selections are:  \begin{lstlisting}