diff --git a/doc/texinfo/gmsh.texi b/doc/texinfo/gmsh.texi
index 09022bbae855674ecb87ec675212846d1d69ce97..cf0099ad5055f438644aac161b362a1df9ff6c18 100644
--- a/doc/texinfo/gmsh.texi
+++ b/doc/texinfo/gmsh.texi
@@ -2671,6 +2671,12 @@ algorithm will try to find the corners automatically.
 
 @end ftable
 
+@c .........................................................................
+@c Levelsets
+@c .........................................................................
+
+@c TODO document levelsets; explain use e.g. with AdaptMesh
+
 @c .........................................................................
 @c Miscellaneous
 @c .........................................................................