add versionadded for getcheckinterval

diff --git a/Doc/lib/libsys.tex b/Doc/lib/libsys.tex
index ea4aafaf8d262ae61204df74ab973bcf2d380ca3..8f8b5cc4c4bb7e665e8eaeda88732c3ee11cc1f5 100644 (file)
--- a/Doc/lib/libsys.tex
+++ b/Doc/lib/libsys.tex
@@ -200,6 +200,7 @@ It is always available.
 \begin{funcdesc}{getcheckinterval}{}
   Return the interpreter's ``check interval'';
   see \function{setcheckinterval()}.
+  \versionadded{2.3}
 \end{funcdesc}
 
 \begin{funcdesc}{getdefaultencoding}{}