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-rw-r--r--Doc/lib/libmmap.tex3
1 files changed, 2 insertions, 1 deletions
diff --git a/Doc/lib/libmmap.tex b/Doc/lib/libmmap.tex
index e7db814..3dca40f 100644
--- a/Doc/lib/libmmap.tex
+++ b/Doc/lib/libmmap.tex
@@ -37,7 +37,8 @@ taken from the specified file. Assignment to an
exception. Assignment to an \constant{ACCESS_WRITE} memory map
affects both memory and the underlying file. Assignment to an
\constant{ACCESS_COPY} memory map affects memory but does not update
-the underlying file.
+the underlying file. \versionchanged[To map anonymous memory,
+-1 should be passed as the fileno along with the length]{2.5}
\begin{funcdesc}{mmap}{fileno, length\optional{, tagname\optional{, access}}}
\strong{(Windows version)} Maps \var{length} bytes from the file