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-rw-r--r--Build/source/utils/asymptote/base/plain_prethree.asy2
1 files changed, 2 insertions, 0 deletions
diff --git a/Build/source/utils/asymptote/base/plain_prethree.asy b/Build/source/utils/asymptote/base/plain_prethree.asy
index 595bac2fad4..cfc0c3c7411 100644
--- a/Build/source/utils/asymptote/base/plain_prethree.asy
+++ b/Build/source/utils/asymptote/base/plain_prethree.asy
@@ -1,5 +1,7 @@
// Critical definitions for transform3 needed by projection and picture.
+pair viewportmargin=(0.1,0.1); // Horizontal and vertical 3D viewport margins.
+
typedef real[][] transform3;
restricted transform3 identity4=identity(4);