deletions | additions       diff --git a/The_basic_idea_of.tex b/The_basic_idea_of.tex  index 22048a1..810e9a8 100644  --- a/The_basic_idea_of.tex  +++ b/The_basic_idea_of.tex 
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\subsubsection{Choosing Our Stars}  To find the coordinates of the stars we'll use {\tt rimcurs}. Start the task by  typing {\tt \begin{verbatim}  cl> rimcurs > coord.lst  \end{verbatim}  %{\tt  rimcurs > coord.lst}. This will direct the output to file {\tt coord.lst}. Place the cursor over the centre of the star and hit  the space bar to register the coordinates. Start with the star  indicated by the arrow