describe optional arguments for DocFileSuite
diff --git a/Doc/lib/libdoctest.tex b/Doc/lib/libdoctest.tex
index b318d2a..5a997d6 100644
--- a/Doc/lib/libdoctest.tex
+++ b/Doc/lib/libdoctest.tex
@@ -1058,7 +1058,11 @@
There are two main functions for creating \class{\refmodule{unittest}.TestSuite}
instances from text files and modules with doctests:
-\begin{funcdesc}{DocFileSuite}{*paths, **kw}
+\begin{funcdesc}{DocFileSuite}{\optional{module_relative}\optional{,
+ package}\optional{, setUp}\optional{,
+ tearDown}\optional{, globs}\optional{,
+ optionflags}\optional{, parser}}
+
Convert doctest tests from one or more text files to a
\class{\refmodule{unittest}.TestSuite}.