deletions | additions       diff --git a/Checkerboard plots.tex b/Checkerboard plots.tex  index 47086c3..173c525 100644  --- a/Checkerboard plots.tex  +++ b/Checkerboard plots.tex 
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Each colored block represents a case in the cluster; the first and last cases in each cluster are labelled with their respective case identifiers, so they may more easily be found on the line list. Like case tree plots, the placement of each colored block along the x-axis corresponds with the case's date of illness onset or diagnosis. Cases in the same cluster with onset dates close to each other may overlap. The plot can be generated using the same line listing as described for case tree plots.