diff --git a/doc/man-pl.but b/doc/man-pl.but
index 58ca7a28..179a926a 100644
--- a/doc/man-pl.but
+++ b/doc/man-pl.but
@@ -93,6 +93,20 @@ very useful in this context.)
 
 \dd Disable interactive prompts.
 
+\dt \cw{-sanitise-stderr}
+
+\dt \cw{-sanitise-stdout}
+
+\dt \cw{-no-sanitise-stderr}
+
+\dt \cw{-no-sanitise-stdout}
+
+\dd By default, Plink can choose to filter control characters if that
+seems appropriate, to prevent remote processes sending confusing escape
+sequences. These options override Plink's default behaviour to enable
+or disabling such filtering on the standard error and standard output
+channels.
+
 \dt \cw{-pw} \e{password}
 
 \dd Set remote password to \e{password}. \e{CAUTION:} this will likely
diff --git a/doc/man-pscp.but b/doc/man-pscp.but
index 6c703e13..515e541f 100644
--- a/doc/man-pscp.but
+++ b/doc/man-pscp.but
@@ -94,6 +94,13 @@ very useful in this context.)
 
 \dd Disable interactive prompts.
 
+\dt \cw{-no-sanitise-stderr}
+
+\dd By default, PSCP will filter control characters from the standard error
+channel from the server, to prevent remote processes sending confusing
+escape sequences. This option forces the standard error channel to not be
+filtered.
+
 \dt \cw{-pw} \e{password}
 
 \dd Set remote password to \e{password}. \e{CAUTION:} this will likely
diff --git a/doc/man-psft.but b/doc/man-psft.but
index 51f30d3a..c1329d0e 100644
--- a/doc/man-psft.but
+++ b/doc/man-psft.but
@@ -82,6 +82,13 @@ very useful in this context.)
 
 \dd Disable interactive prompts.
 
+\dt \cw{-no-sanitise-stderr}
+
+\dd By default, PSFTP will filter control characters from the standard error
+channel from the server, to prevent remote processes sending confusing
+escape sequences. This option forces the standard error channel to not be
+filtered.
+
 \dt \cw{-pw} \e{password}
 
 \dd Set remote password to \e{password}. \e{CAUTION:} this will likely