diff --git a/doc/pio/tex/c_quick_ref.tex b/doc/pio/tex/c_quick_ref.tex
index e5c1a8dbbb62a79bd9008e892ec232a9ae938eb1..4880dca576f5dfe2e4601e25122f5e952e54b0cb 100644
--- a/doc/pio/tex/c_quick_ref.tex
+++ b/doc/pio/tex/c_quick_ref.tex
@@ -226,7 +226,7 @@ configuration object.
 set function to be called after
 setup of client/server communications of configuration object.
 Deprecated: use cdiPioConfSetCallBackActions with
-trigger == CDIPIO_CALLBACK_POSTCOMMSETUP in new programs.
+trigger == CDIPIO_CALLBACK_POSTCOMMSETUP in new programs!.
 
 
 \section*{\tt \htmlref{cdiPioConfSetRecordAggBufLim}{cdiPioConfSetRecordAggBufLim}}
@@ -385,10 +385,23 @@ namespace.
     void cdiPioNoPostCommSetup ();
 \end{verbatim}
 
-Dummy function to use as argument to pioInit
+Dummy default function to use as argument to
+cdiPioConfSetCallBackActions or pioInit
 if no actions are necessary after I/O servers initialize communication.
 
 
+\section*{\tt \htmlref{cdiPioRDMAProgress}{cdiPioRDMAProgress}}
+
+\begin{verbatim}
+    void cdiPioRDMAProgress ();
+\end{verbatim}
+
+devote some resources to make RMA progress This
+call is meant for systems where the hardware and/or MPI make
+insufficient progress when only calling
+MPI_Win_post/MPI_Win_wait+MPI_Win_start/MPI_Win_get/MPI_Win_complete.
+
+
 \section*{\tt \htmlref{cdiPioStr2IOMode}{cdiPioStr2IOMode}}
 
 \begin{verbatim}
@@ -424,7 +437,17 @@ conversion[varID] == CDI_DATATYPE_FLT64 or with streamWriteVarF
                       void (*postCommSetupActions)(void));
 \end{verbatim}
 
-initialize I/O server processes and communication.
+initialize I/O server processes and communication
+Deprecated, use cdiPioInit instead!.
+
+
+\section*{\tt \htmlref{pioWriteTimestep}{pioWriteTimestep}}
+
+\begin{verbatim}
+    void pioWriteTimestep ();
+\end{verbatim}
+
+flush data from all client RMA buffers to server.
 
 
 \section*{\tt \htmlref{streamWriteScatteredVarPart}{streamWriteScatteredVarPart}}
diff --git a/doc/pio/tex/f_quick_ref.tex b/doc/pio/tex/f_quick_ref.tex
index 339605ff1929f032204f051b391f144bce632581..eed40e294070ee52a98195b2443ff04c55b1d325 100644
--- a/doc/pio/tex/f_quick_ref.tex
+++ b/doc/pio/tex/f_quick_ref.tex
@@ -229,7 +229,7 @@ configuration object.
 set function to be called after
 setup of client/server communications of configuration object.
 Deprecated: use cdiPioConfSetCallBackActions with
-trigger == CDIPIO_CALLBACK_POSTCOMMSETUP in new programs.
+trigger == CDIPIO_CALLBACK_POSTCOMMSETUP in new programs!.
 
 
 \section*{\tt \htmlref{cdiPioConfSetRecordAggBufLim}{cdiPioConfSetRecordAggBufLim}}
@@ -392,10 +392,23 @@ namespace.
     SUBROUTINE cdiPioNoPostCommSetup
 \end{verbatim}
 
-Dummy function to use as argument to pioInit
+Dummy default function to use as argument to
+cdiPioConfSetCallBackActions or pioInit
 if no actions are necessary after I/O servers initialize communication.
 
 
+\section*{\tt \htmlref{cdiPioRDMAProgress}{cdiPioRDMAProgress}}
+
+\begin{verbatim}
+    SUBROUTINE cdiPioRDMAProgress
+\end{verbatim}
+
+devote some resources to make RMA progress This
+call is meant for systems where the hardware and/or MPI make
+insufficient progress when only calling
+MPI_Win_post/MPI_Win_wait+MPI_Win_start/MPI_Win_get/MPI_Win_complete.
+
+
 \section*{\tt \htmlref{cdiPioStr2IOMode}{cdiPioStr2IOMode}}
 
 \begin{verbatim}
@@ -431,7 +444,17 @@ conversion[varID] == CDI_DATATYPE_FLT64 or with streamWriteVarF
                               PROCEDURE postCommSetupActions)
 \end{verbatim}
 
-initialize I/O server processes and communication.
+initialize I/O server processes and communication
+Deprecated, use cdiPioInit instead!.
+
+
+\section*{\tt \htmlref{pioWriteTimestep}{pioWriteTimestep}}
+
+\begin{verbatim}
+    SUBROUTINE pioWriteTimestep
+\end{verbatim}
+
+flush data from all client RMA buffers to server.
 
 
 \section*{\tt \htmlref{streamWriteScatteredVarPart}{streamWriteScatteredVarPart}}
diff --git a/src/cdipio.h b/src/cdipio.h
index 9bdb392582316339a3e5990a9d7ac78997395009..e6e3fe08828a73609d38c4083adc61d277a4872a 100644
--- a/src/cdipio.h
+++ b/src/cdipio.h
@@ -36,16 +36,23 @@
 void     pioEndDef             ( void );
 void     pioEndTimestepping    ( void );
 void     pioFinalize           ( void );
-/* cdiPioNoPostCommSetup: Dummy function to use as argument to pioInit
+/* cdiPioNoPostCommSetup: Dummy default function to use as argument to
+ * cdiPioConfSetCallBackActions or pioInit
  * if no actions are necessary after I/O servers initialize communication */
 void cdiPioNoPostCommSetup(void);
-/*      pioInit: initialize I/O server processes and communication */
+/* pioInit: initialize I/O server processes and communication
+ * Deprecated, use cdiPioInit instead! */
 MPI_Comm pioInit(MPI_Comm commSuper, int nProcsIO, int IOMode,
                  int *pioNamespace, float partInflate,
                  void (*postCommSetupActions)(void));
 /*      cdiPioInit: initialize I/O server processes and communication */
 MPI_Comm cdiPioInit(MPI_Comm commSuper, int confResH, int *pioNamespace);
+/* pioWriteTimestep: flush data from all client RMA buffers to server */
 void     pioWriteTimestep(void);
+/* cdiPioRDMAProgress: devote some resources to make RMA progress This
+ * call is meant for systems where the hardware and/or MPI make
+ * insufficient progress when only calling
+ * MPI_Win_post/MPI_Win_wait+MPI_Win_start/MPI_Win_get/MPI_Win_complete */
 void     cdiPioRDMAProgress(void);
 
 
@@ -156,7 +163,7 @@ int cdiPioConfGetCSRole(int confResH);
 /* cdiPioConfSetPostCommSetupActions: set function to be called after
  * setup of client/server communications of configuration object.
  * Deprecated: use cdiPioConfSetCallBackActions with
- * trigger == CDIPIO_CALLBACK_POSTCOMMSETUP in new programs */
+ * trigger == CDIPIO_CALLBACK_POSTCOMMSETUP in new programs! */
 void cdiPioConfSetPostCommSetupActions(int confResH,
                                        void (*postCommSetupActions)(void));