diff --git a/.gitmodules b/.gitmodules
index 741de09..50c2e22 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "docs/papers/coope"]
 	path = docs/papers/coope
 	url = git@gitorious.org:easejs/coope.git
+[submodule "docs/papers/cptt"]
+	path = docs/papers/cptt
+	url = https://mikegerwitz.com/projects/cptt
diff --git a/Makefile b/Makefile
index 92ed099..9a8dad4 100644
--- a/Makefile
+++ b/Makefile
@@ -71,7 +71,7 @@ thoughts:
 	$(repo2html) -icontent -ftools/mdfmt <$< >$@
 
 # TeX papers are expected to have their own makefiles as well as an abstract.tex
-%.html: coope/%.tex
+%.html: %/abstract.tex
 	$(MAKE) -C '$(dir $<)' pdf dvi
 	url_root='$(url_root)' ./tools/texdoc '$(dir $<)' | $(repo2html) -icontent -ftools/extfmt >$@
 
diff --git a/docs/papers/cptt b/docs/papers/cptt
new file mode 160000
index 0000000..41a35f3
--- /dev/null
+++ b/docs/papers/cptt
@@ -0,0 +1 @@
+Subproject commit 41a35f3c37fd41772ff7ae8aca62d77c4cafcf6c
diff --git a/tools/texdoc b/tools/texdoc
index 33274dc..1d88212 100755
--- a/tools/texdoc
+++ b/tools/texdoc
@@ -27,7 +27,9 @@ base="$( basename "$path" )"
 head -n1 "$main" | sed '1s/^% //;1a\\'
 (
   tr '\n' ' ' \
-    | sed 's/\\[^ ]\+\({[^}]\+}\)\?//g;$a\\'
+    | sed 's/\\[^ ]\+\({[^}]\+}\)\?//g;
+           s/~/ /g;
+           $a\\'
 
   # all articles should provide PDF and DVI
   cat <<EOF