\item If comparing results with the original Cinelerra version for Subtract and Divide, you may have to switch the order of the source and destination tracks to see the same output. If you do not want to switch tracks, you can use the \textit{overlay} plugin as shared and change the Layer order and/or Output layer. The reason for having to switch tracks to get equivalent output is because of differences in the math formulas used. Subtract exactly matches the original Cinelerra version if you switch the 2 tracks; Divide matches in one order only.
\item Instead of using the patchbay overlays, you may prefer to use the \textit{overlay} plugin instead.
\item If you see undesirable results, always check under Settings->Format and check your Color Model as that will vary or interfere with the look.
- \item There are Gimp-like options for Addition, Subtraction, Divide and Multiply available through the use of the Blend Algebra plugin as documented with accompanying programs \href{https://cinelerra-gg.org/download/testing/BlendPluginExamples/gimp\_.zip}{here}. To use, reference the section \nameref{sub:blend_algebra}.
\end{enumerate}
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