diff --git a/Makefile b/Makefile
index 5264ffc..adc3cce 100644
--- a/Makefile
+++ b/Makefile
@@ -37,7 +37,8 @@ all : $(TARGETS)
 
 clean ::
 	rm -rf doc foo foo2 out.pdf out2.pdf foo.pdf decomp.pdf *.cmt *.cmti \
-	*.json test/*.pdf debug/*.pdf *.ps *.aux *.idx *.log *.out *.toc *.cut
+	*.json test/*.pdf debug/*.pdf *.ps *.aux *.idx *.log *.out *.toc *.cut \
+	*.ttf
 
 DOC_FILES = $(foreach x,$(DOC),$(x).mli )
 
diff --git a/cpdftruetype.ml b/cpdftruetype.ml
index 13f3bf9..ecf37ca 100644
--- a/cpdftruetype.ml
+++ b/cpdftruetype.ml
@@ -2,6 +2,8 @@
 open Pdfutil
 open Pdfio
 
+(* ./cpdf -font-ttf ~/repos/pdfs/fonts/NotoSans-Bold.ttf -add-text foo hello.pdf -o out.pdf *)
+
 type t =
   {flags : int;
    minx : int;