diff --git a/README b/README
index 88bfab1b1..2d73f6b05 100644
--- a/README
+++ b/README
@@ -896,6 +896,9 @@ If you need a hard line break, put two or more spaces at the end of a line.
 **Extension: `escaped_line_breaks`**
 
 A backslash followed by a newline is also a hard line break.
+Note:  in multiline and grid table cells, this is the only way
+to create a hard line break, since trailing spaces in the cells
+are ignored.
 
 Headers
 -------