Wrap all mjotex files in conditionals to prevent double-loading.

[mjotex.git] / mjo-arrow.tex

diff --git a/mjo-arrow.tex b/mjo-arrow.tex
index 8b44ded1753eb175124ed71fa73ad4e5ec9b35e5..4dd5f88bc6053dd224dd3c7b138ff757c78fe301 100644 (file)
--- a/mjo-arrow.tex
+++ b/mjo-arrow.tex
@@ -1,6 +1,9 @@
 %
 % Things dealing with arrows in a category. Or functions, basically.
 %
+\ifx\havemjoarrow\undefined
+\def\havemjoarrow{1}
+
 
 \input{mjo-common}
 
@@ -16,3 +19,6 @@
 
 % The preimage of the second argument (a set) under the first (a function).
 \newcommand*{\preimage}[2]{ #1^{-1}\of{#2} }
+
+
+\fi