diff --git a/docs/latex/wx/htmltags.tex b/docs/latex/wx/htmltags.tex
index 0456fb35a2..f9fc091b18 100644
--- a/docs/latex/wx/htmltags.tex
+++ b/docs/latex/wx/htmltags.tex
@@ -117,6 +117,8 @@ SAMP
 SMALL
 STRIKE
 STRONG
+SUB
+SUP
 TABLE           ALIGN=[alignment]
                 WIDTH=[percent|pixels]
                 BORDER=[pixels]