diff --git a/MANUAL.txt b/MANUAL.txt
index b15f93018..3de9e4250 100644
--- a/MANUAL.txt
+++ b/MANUAL.txt
@@ -4337,8 +4337,11 @@ When `latex_macros` is disabled, the raw LaTeX and math will
 not have macros applied. This is usually a better approach when
 you are targeting LaTeX or PDF.
 
-The macro definitions will be passed through as raw LaTeX
-only if `latex_macros` is not enabled.
+Macro definitions in LaTeX will be passed through as raw LaTeX
+only if `latex_macros` is not enabled.  Macro definitions in
+Markdown source (or other formats allowing `raw_tex`) will
+be passed through regardless of whether `latex_macros` is
+enabled.
 
 ## Links