diff --git a/src/proto/memfile.pro b/src/proto/memfile.pro
new file mode 100644
index 0000000..3feb677
--- /dev/null
+++ b/src/proto/memfile.pro
@@ -0,0 +1,17 @@
+/* memfile.c */
+memfile_T *mf_open __ARGS((char_u *fname, int flags));
+int mf_open_file __ARGS((memfile_T *mfp, char_u *fname));
+void mf_close __ARGS((memfile_T *mfp, int del_file));
+void mf_close_file __ARGS((buf_T *buf, int getlines));
+void mf_new_page_size __ARGS((memfile_T *mfp, unsigned new_size));
+bhdr_T *mf_new __ARGS((memfile_T *mfp, int negative, int page_count));
+bhdr_T *mf_get __ARGS((memfile_T *mfp, blocknr_T nr, int page_count));
+void mf_put __ARGS((memfile_T *mfp, bhdr_T *hp, int dirty, int infile));
+void mf_free __ARGS((memfile_T *mfp, bhdr_T *hp));
+int mf_sync __ARGS((memfile_T *mfp, int flags));
+int mf_release_all __ARGS((void));
+blocknr_T mf_trans_del __ARGS((memfile_T *mfp, blocknr_T old_nr));
+void mf_set_ffname __ARGS((memfile_T *mfp));
+void mf_fullname __ARGS((memfile_T *mfp));
+int mf_need_trans __ARGS((memfile_T *mfp));
+/* vim: set ft=c : */