diff --git a/_macros.tex b/_macros.tex
new file mode 100644
index 0000000..47232e1
--- /dev/null
+++ b/_macros.tex
@@ -0,0 +1,3 @@
+\newcommand{\ELBO}[2]{\mathcal{J}(#1,#2)}
+\newcommand{\R}{\mathcal{R}}
+\newcommand{\ELBORTheta}{\ELBO{\R}{\pmb{\theta}}}