Index: trunk/MagicSoft/TDAS-Extractor/Algorithms.tex
===================================================================
--- trunk/MagicSoft/TDAS-Extractor/Algorithms.tex	(revision 6663)
+++ trunk/MagicSoft/TDAS-Extractor/Algorithms.tex	(revision 6664)
@@ -278,4 +278,7 @@
 \end{description}
 
+Figure~\ref{fig:slidingwindowsketch} gives a sketch of the reconstructed arrival time of the possible extraction 
+window positions in two typical calibration pulses. 
+
 \begin{figure}[htp]
   \includegraphics[width=0.49\linewidth]{MExtractTimeAndChargeSlidingWindow_5Led_UV.eps}
@@ -325,4 +328,7 @@
 low-gain as compared to the high gain pulses (default: 1.5)
 \end{description}
+
+Figure~\ref{fig:splinesketch} gives a sketch of the reconstructed arrival time for possible extraction 
+window positions in two typical calibration pulses. 
 
 \begin{figure}[htp]
@@ -721,4 +727,7 @@
 \end{description}
 
+Figure~\ref{fig:dfsketch} gives a sketch of the reconstructed arrival time of the possible extraction 
+window positions in two typical calibration pulses. 
+
 \begin{figure}[htp]
   \includegraphics[width=0.49\linewidth]{MExtractTimeAndChargeDigitalFilter_5Led_UV.eps}
@@ -736,10 +745,10 @@
 This extractor is implemented in the MARS-class {\textit{\bf MExtractTimeAndChargeDigitalFilterPeakSearch}}.
 
-The idea of this extractor is to combine {\textit{\bf MExtractFixedWindowPeakSearch}} and 
-{\textit{\bf MExtractTimeAndChargeDigitalFilter}} in order to correct for coherent movements in arrival time 
+The idea of this extractor is to combine {\textit{\bf MExtractFixedWindowPeakSearch}} (the same reference point for all pixels) and 
+{\textit{\bf MExtractTimeAndChargeDigitalFilter}}, where the reference point is determined pixel by pixel, in order to correct for coherent movements in arrival time 
 for all pixels and still use the digital filter fit capabilities. 
  \par
 
-In a first loop, it fixes a reference point defined as the highest sum of 
+In a first loop over the pixels, it fixes a reference point (slice number) defined by the highest sum of 
 consecutive non-saturating FADC slices in a (smaller) peak-search window.
 \par