deletions | additions       diff --git a/Pipeline steps.tex b/Pipeline steps.tex  index b0e223e..95d76cd 100644  --- a/Pipeline steps.tex  +++ b/Pipeline steps.tex 
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\section{Pipeline steps}  \subsection{Makefile generator}  Input: \subsubsection{Purpose}  From the headers of FITS files, identifies the purpose of each file. Each file is classified as one of:   \begin{itemize}  \item Arc lamp calibration -- used for wavelength solution  \item Flat field calibration -- used for trace location, spaxel flat, and pixel flat  \item Standard star -- used for throughput measurement  \item Science target (bright) -- usually single "A" pointing on science target.   \item Science target (faint) -- multiple dithered pointings on a science target.  \item Note that the same target may be observed multiple times in a single night and must be reduced as an independent observations  \end{itemize}  \subsubsection{Input}  List of fits files  Output: \subsubsection{Output}  Makefile