diff --git a/docs/manual/string_commands.rst b/docs/manual/string_commands.rst
index 587399c..402ad12 100644
--- a/docs/manual/string_commands.rst
+++ b/docs/manual/string_commands.rst
@@ -102,6 +102,7 @@ Command                 Effect
 ``{}``                  Continue at the next line
 ``{{}``                 Output a ``{``
 ``{NBSP}``              Display a non-breaking space
+``{ZWSP}``              Insert a breaking zero-width space
 ``{COPYRIGHT}``         Display a copyright symbol
 ``{TRAIN}``             Output a train symbol
 ``{LORRY}``             Output a truck symbol
diff --git a/webtranslate/parameter_info_table.py b/webtranslate/parameter_info_table.py
index 24ca361..059e1f5 100644
--- a/webtranslate/parameter_info_table.py
+++ b/webtranslate/parameter_info_table.py
@@ -152,6 +152,7 @@
     ParameterInfo("PLANE",             [], None, False, True ),
     ParameterInfo("SHIP",              [], None, False, True ),
     ParameterInfo("NBSP",              [], None, False, False),
+    ParameterInfo("ZWSP",              [], None, False, False),
     ParameterInfo("COPYRIGHT",         [], None, False, True ),
 
     # The following are directional formatting codes used to get the RTL strings right: