- made fixes to hkl

- Introduced a help system
- introduced a module for handling automatic updates of files during
  long measurements
- Added a circular buffer and handling facilities to varlog
- Upgraded documentation


SKIPPED:
	psi/faverage.h
	psi/nxamor.tex
	psi/pimotor.h
	psi/pimotor.tex

doc/programmer/interface.tex

@@ -60,6 +60,7 @@ $\langle$obdes {\footnotesize ?}$\rangle\equiv$
 \mbox{}\verb@ /*---------------------------------------------------------------------------*/@\\
 \mbox{}\verb@   pObjectDescriptor CreateDescriptor(char *name);@\\
 \mbox{}\verb@   void              DeleteDescriptor(pObjectDescriptor self);@\\
+\mbox{}\verb@   pObjectDescriptor FindDescriptor(void *pData);@\\
 \mbox{}\verb@ @\\
 \mbox{}\verb@/*============================================================================@\\
 \mbox{}\verb@        Objects which do not carry data need a dummy descriptor. Otherwise@\\
@@ -207,6 +208,8 @@ $\langle$count {\footnotesize ?}$\rangle\equiv$
 \mbox{}\verb@   typedef struct {@\\
 \mbox{}\verb@                   int ID;@\\
 \mbox{}\verb@                   int (*Halt)(void *self);@\\
+\mbox{}\verb@                   void (*SetCountParameters)(void *self, float fPreset,@\\
+\mbox{}\verb@                                             CounterMode eMode);\@\\
 \mbox{}\verb@                   int (*StartCount)(void *self, SConnection *pCon);@\\
 \mbox{}\verb@                   int (*CheckCountStatus)(void *self, SConnection *pCon);@\\
 \mbox{}\verb@                   int (*Pause)(void *self, SConnection *pCon);@\\
@@ -313,6 +316,11 @@ $\langle$cifunc {\footnotesize ?}$\rangle\equiv$
 \mbox{}\verb@                        void *pUserData, KillFuncIT pKill);@\\
 \mbox{}\verb@   int RemoveCallback(pICallBack pInterface, long iID);@\\
 \mbox{}\verb@   int RemoveCallback2(pICallBack pInterface, void *pUserData);@\\
+\mbox{}\verb@@\\
+\mbox{}\verb@   int CallbackScript(SConnection *pCon, SicsInterp *pSics, void *pData,@\\
+\mbox{}\verb@        int argc, char *argv[]); @\\
+\mbox{}\verb@@\\
+\mbox{}\verb@   pICallBack GetCallbackInterface(void *pData); @\\
 \mbox{}\verb@@$\diamond$
 \end{list}
 \vspace{-1ex}
@@ -360,8 +368,16 @@ RegisterCallBack.
 search key for deletion is the pointer to user data. All callbacks related
 to this user data in the interface specified will be removed.
 
+{\bf CallbackScript} allows to connect callbacks to scripts. Please
+note, that those scripts will have a dummy connection to clients only
+and will not be able to write to clients. All output occurring in
+these scripts will be directed to stdout though, in order to support
+debugging.
+
+
 All these functions are implemented in the file callback.c.
       
+
 \subsubsection{The Environment Interface}
 This interface is used by the environment monitor in order to monitor
 the status of a environment controller. The interface looks like this: