diff --git a/README.md b/README.md
index 4fbf2a7..40ccaf6 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,8 @@
 ## Camini epics module
 
-This is an epics interface module for camini.
+This is an epics interface module for camini the windows application, and camini the NICOS device.
+It has only been tested with version 0.5.2 of the windows application, with Ikon-L.
 
-This is the recommended solution (by Pierre) for Ikon-L camera.
+This is the recommended solution (by Pierre), at least for Ikon-L camera.
 You should make sure to configure Camini with string "EPICS-", meaning without internal IOC.
 It then uses the PVs provided here as the interface.
diff --git a/db/camini.db b/db/camini.db
index de43a3c..c97f64d 100644
--- a/db/camini.db
+++ b/db/camini.db
@@ -1,5 +1,12 @@
-# This is a database for the simulation of the CAMINI
-# detector control software @ ICON @ SINQ
+# This is broker database, with PVs that are expected to exist by the
+# camini Ikon-L application. And in turn also NICOS camini device.
+# It mainly allows indirect communication between camini the windows application
+# and camini the NICOS device.
+# And in addition, the $(P)AUX PV has to be written from the sumIO.db.
+#
+# This has been tested with version 0.5.2 of the Camini windows application.
+#
+
 record(bi,"$(P)ARM")
 {
    field(DTYP,"Soft Channel")
diff --git a/db/sumIO.db b/db/sumIO.db
index e492194..fbe84d5 100644
--- a/db/sumIO.db
+++ b/db/sumIO.db
@@ -1,3 +1,24 @@
+# sumIO.db, SW impl. of protoncurrent averaging and interface with camini and NICOS 
+#
+# The following PVs is indirectly required by camini, they have to first be
+# mapped to EpicsReadable devices.
+# $(P)THRES
+# $(P)BEAMCOPY
+# These could be renamed if corresponding NICOS setup files are adapted.
+# 
+# The following PVs are expected to exists by the BeamOracle device in NICOS.
+# This device only take $(P) as input, so the name-suffix has to be exact unless
+# the BeamOracle device is modified/updated.
+# $(P)SWITCH
+# $(P)ACCINT
+# $(P)ACCTIME
+# $(P)BEAMAVG
+#
+# This DB also provides a macro $(AI) that used to forward the beam valid signal.
+# For camini this is used to forward the value to the $(P)CAMINI:AUX PV.
+#
+#################################
+# Comments from original author:
 # This code integrates the beam intensity signal during the
 # time where the integration is activated (SWITCH = 1)
 # and the camera is acquiring (SHUTTER = 0). It also counts
@@ -5,6 +26,7 @@
 # the average intensity. This average intensity is compared
 # to a threshold to indicate the camera whether the exposure
 # is sufficient.
+##################################
 
 
 # this is a switch which can be set to activate/deactivate the counting
@@ -28,7 +50,6 @@ record(ai, "$(P)ACCTIME"){
   field(LINR, "LINEAR")
 }
 
-
 # This is the threshold for acceptable intensity
 record(ai, "$(P)THRES") {
   field(DTYP, "Soft Channel")
@@ -41,7 +62,6 @@ record(ai, "$(P)LASTAVG") {
   field(LINR, "LINEAR")
 }
 
-
 # This is a record to hold a copy of the HIPA proton beam intensity
 record(ai, "$(P)BEAMCOPY") {
   field(SCAN, "1 second")
@@ -49,7 +69,6 @@ record(ai, "$(P)BEAMCOPY") {
   field(INP, "$(AI)")
 }
 
-
 # This record computes the total exposure time
 # (gated by the SWITCH and SHUTTER signals)
 record(calcout, "$(P)EXPTIME") {
@@ -64,7 +83,6 @@ record(calcout, "$(P)EXPTIME") {
   field(DOPT,"Use CALC")
 }
 
-
 # This record computes the integral of the beam intensity
 # (gated by the SWITCH and SHUTTER signals)
 record(calcout, "$(P)BEAMINT") {
@@ -80,7 +98,6 @@ record(calcout, "$(P)BEAMINT") {
   field(FLNK, "$(P)BEAMAVG")
 }
 
-
 # This record computes the average beam intensity
 record(calcout, "$(P)BEAMAVG") {
   field(INPA,"$(P)EXPTIME")
@@ -93,7 +110,6 @@ record(calcout, "$(P)BEAMAVG") {
   field(FLNK, "$(P)AUX")
 }
 
-
 # This record compares the average intensity to the threshold
 record(calcout, "$(P)AUX") {
   field(INPA,"$(P)BEAMAVG")