diff --git a/problemtools/templates/html/Sentences.zpts b/problemtools/templates/html/Sentences.zpts
index 0cd4c93d..542ada16 100644
--- a/problemtools/templates/html/Sentences.zpts
+++ b/problemtools/templates/html/Sentences.zpts
@@ -48,3 +48,9 @@ comment:  
 
 name: underbar
 <span class="underbar" tal:content="self">underbar</span>
+
+name: textsuperscript
+<sup tal:content="self">superscripted text</sup>
+
+name: textsubscript
+<sub tal:content="self">subscripted text</sub>