diff --git a/DESCRIPTION b/DESCRIPTION
index 61dc3272719dd6804f7cd778d6205f8b150287be..f7f343c322f259de6bca3edec799362160bdffed 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: airGR
 Type: Package
 Title: Suite of GR Hydrological Models for Precipitation-Runoff Modelling
-Version: 1.6.3.49
+Version: 1.6.3.50
 Date: 2020-11-11
 Authors@R: c(
   person("Laurent", "Coron", role = c("aut", "trl"), comment = c(ORCID = "0000-0002-1503-6204")),
diff --git a/NEWS.md b/NEWS.md
index 1869403f7ee691e8cfd40bdc4f4336957662e229..d990b93a3c96f7175c4cc3eaf95c22fcccb94c2a 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -4,7 +4,7 @@
 
 
 
-### 1.6.3.49 Release Notes (2020-11-11)
+### 1.6.3.50 Release Notes (2020-11-11)
 
 #### New features
 
diff --git a/R/RunModel_GR1A.R b/R/RunModel_GR1A.R
index 432a1eaa9e22c1a51ef9c97faffd7e82298c6730..f502410d9a55cab38c1e5682d3163e0b30661955 100644
--- a/R/RunModel_GR1A.R
+++ b/R/RunModel_GR1A.R
@@ -1,5 +1,7 @@
 RunModel_GR1A <- function(InputsModel, RunOptions, Param) {
   
+  
+  ## Initialization of variables
   NParam <- 1
   FortranOutputs <- .FortranOutputs(GR = "GR1A")$GR
   
diff --git a/R/RunModel_GR2M.R b/R/RunModel_GR2M.R
index 5875d92ede952cce8dbbbf80ab082b60ee9ea37b..0a3683a158c205a7fca4d44d6cdf3a177d0d36fc 100644
--- a/R/RunModel_GR2M.R
+++ b/R/RunModel_GR2M.R
@@ -1,9 +1,12 @@
 RunModel_GR2M <- function(InputsModel,RunOptions,Param) {
   
+  
+  ## Initialization of variables
   NParam <- 2;
   FortranOutputs <- .FortranOutputs(GR = "GR2M")$GR
   
-  ##Arguments_check
+  
+  ## Arguments_check
   if (inherits(InputsModel,"InputsModel")==FALSE) { stop("'InputsModel' must be of class 'InputsModel'") }  
   if (inherits(InputsModel,"monthly"    )==FALSE) { stop("'InputsModel' must be of class 'monthly'    ") }  
   if (inherits(InputsModel,"GR"         )==FALSE) { stop("'InputsModel' must be of class 'GR'         ") }  
@@ -23,27 +26,27 @@ RunModel_GR2M <- function(InputsModel,RunOptions,Param) {
     Param[2L] <- Param_X1X2_threshold
   }
   
-  ##Input_data_preparation
+  ## Input_data_preparation
   if (identical(RunOptions$IndPeriod_WarmUp,as.integer(0))) { RunOptions$IndPeriod_WarmUp <- NULL; }
   IndPeriod1   <- c(RunOptions$IndPeriod_WarmUp,RunOptions$IndPeriod_Run);
   LInputSeries <- as.integer(length(IndPeriod1))
   if ("all" %in% RunOptions$Outputs_Sim) { IndOutputs <- as.integer(1:length(FortranOutputs)); 
   } else { IndOutputs <- which(FortranOutputs %in% RunOptions$Outputs_Sim);  }
   
-  ##Output_data_preparation
+  ## Output_data_preparation
   IndPeriod2     <- (length(RunOptions$IndPeriod_WarmUp)+1):LInputSeries;
   ExportDatesR   <- "DatesR"   %in% RunOptions$Outputs_Sim;
   ExportStateEnd <- "StateEnd" %in% RunOptions$Outputs_Sim;
   
-  ##Use_of_IniResLevels
+  ## Use_of_IniResLevels
   if (!is.null(RunOptions$IniResLevels)) {
-    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1];  ### production store level (mm)
-    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[2];  ### routing store level (mm)
+    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1]; ### production store level (mm)
+    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[2]; ### routing store level (mm)
   }
   
-  ##Call_fortan
+  ## Call_fortan
   RESULTS <- .Fortran("frun_gr2M",PACKAGE="airGR",
-                      ##inputs
+                      ## inputs
                       LInputs=LInputSeries,                             ### length of input and output series
                       InputsPrecip=InputsModel$Precip[IndPeriod1],      ### input series of total precipitation [mm/month]
                       InputsPE=InputsModel$PotEvap[IndPeriod1],         ### input series potential evapotranspiration [mm/month]
@@ -53,9 +56,9 @@ RunModel_GR2M <- function(InputsModel,RunOptions,Param) {
                       StateStart=RunOptions$IniStates,                  ### state variables used when the model run starts
                       NOutputs=as.integer(length(IndOutputs)),          ### number of output series
                       IndOutputs=IndOutputs,                            ### indices of output series
-                      ##outputs
-                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)),  ### output series [mm]
-                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                  ### state variables at the end of the model run
+                      ## outputs
+                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)), ### output series [mm]
+                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                 ### state variables at the end of the model run
   )
   RESULTS$Outputs [round(RESULTS$Outputs ,3)==(-999.999)] <- NA;
   RESULTS$StateEnd[round(RESULTS$StateEnd,3)==(-999.999)] <- NA;
@@ -68,29 +71,28 @@ RunModel_GR2M <- function(InputsModel,RunOptions,Param) {
   }
   
   
-  ##Output_data_preparation
-  ##OutputsModel_only
+  ## Output_data_preparation
+  ## OutputsModel_only
   if (ExportDatesR==FALSE & ExportStateEnd==FALSE) {
     OutputsModel <- lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]);
     names(OutputsModel) <- FortranOutputs[IndOutputs];      }
-  ##DatesR_and_OutputsModel_only
+  ## DatesR_and_OutputsModel_only
   if (ExportDatesR==TRUE & ExportStateEnd==FALSE) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs]);      }
-  ##OutputsModel_and_SateEnd_only
+  ## OutputsModel_and_SateEnd_only
   if (ExportDatesR==FALSE & ExportStateEnd==TRUE) {
     OutputsModel <- c( lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c(FortranOutputs[IndOutputs],"StateEnd");      }
-  ##DatesR_and_OutputsModel_and_SateEnd
-  if ((ExportDatesR==TRUE & ExportStateEnd==TRUE) | "all" %in% RunOptions$Outputs_Sim) {
+  ## DatesR_and_OutputsModel_and_SateEnd
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs],"StateEnd");      }
   
-  ##End
+  ## End
   rm(RESULTS); 
   class(OutputsModel) <- c("OutputsModel","monthly","GR");
   return(OutputsModel);
diff --git a/R/RunModel_GR4H.R b/R/RunModel_GR4H.R
index 497284f5db05e9990d3320d71f6889d19f8749db..6b2b55a04bbeacc7cfb449e7d0ed3339bcf02668 100644
--- a/R/RunModel_GR4H.R
+++ b/R/RunModel_GR4H.R
@@ -1,9 +1,12 @@
 RunModel_GR4H <- function(InputsModel,RunOptions,Param) {
   
+  
+  ## Initialization of variables
   NParam <- 4;
   FortranOutputs <- .FortranOutputs(GR = "GR4H")$GR
   
-  ##Arguments_check
+  
+  ## Arguments_check
   if (inherits(InputsModel,"InputsModel")==FALSE) { stop("'InputsModel' must be of class 'InputsModel'") }  
   if (inherits(InputsModel,"hourly"     )==FALSE) { stop("'InputsModel' must be of class 'hourly'     ") }  
   if (inherits(InputsModel,"GR"         )==FALSE) { stop("'InputsModel' must be of class 'GR'         ") }  
@@ -28,27 +31,27 @@ RunModel_GR4H <- function(InputsModel,RunOptions,Param) {
     Param[4L] <- Param_X4_threshold
   }     
   
-  ##Input_data_preparation
+  ## Input_data_preparation
   if (identical(RunOptions$IndPeriod_WarmUp,as.integer(0))) { RunOptions$IndPeriod_WarmUp <- NULL; }
   IndPeriod1   <- c(RunOptions$IndPeriod_WarmUp,RunOptions$IndPeriod_Run);
   LInputSeries <- as.integer(length(IndPeriod1))
   if ("all" %in% RunOptions$Outputs_Sim) { IndOutputs <- as.integer(1:length(FortranOutputs)); 
   } else { IndOutputs <- which(FortranOutputs %in% RunOptions$Outputs_Sim);  }
   
-  ##Output_data_preparation
+  ## Output_data_preparation
   IndPeriod2     <- (length(RunOptions$IndPeriod_WarmUp)+1):LInputSeries;
   ExportDatesR   <- "DatesR"   %in% RunOptions$Outputs_Sim;
   ExportStateEnd <- "StateEnd" %in% RunOptions$Outputs_Sim;
   
-  ##Use_of_IniResLevels
+  ## Use_of_IniResLevels
   if (!is.null(RunOptions$IniResLevels)) {
     RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1];  ### production store level (mm)
     RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[3];  ### routing store level (mm)
   }
   
-  ##Call_fortan
+  ## Call_fortan
   RESULTS <- .Fortran("frun_gr4h",PACKAGE="airGR",
-                      ##inputs
+                      ## inputs
                       LInputs=LInputSeries,                             ### length of input and output series
                       InputsPrecip=InputsModel$Precip[IndPeriod1],      ### input series of total precipitation [mm/h]
                       InputsPE=InputsModel$PotEvap[IndPeriod1],         ### input series potential evapotranspiration [mm/h]
@@ -58,9 +61,9 @@ RunModel_GR4H <- function(InputsModel,RunOptions,Param) {
                       StateStart=RunOptions$IniStates,                  ### state variables used when the model run starts
                       NOutputs=as.integer(length(IndOutputs)),          ### number of output series
                       IndOutputs=IndOutputs,                            ### indices of output series
-                      ##outputs
-                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)),  ### output series [mm]
-                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                  ### state variables at the end of the model run
+                      ## outputs
+                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)), ### output series [mm]
+                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                 ### state variables at the end of the model run
   )
   RESULTS$Outputs[ round(RESULTS$Outputs ,3)==(-999.999)] <- NA;
   RESULTS$StateEnd[round(RESULTS$StateEnd,3)==(-999.999)] <- NA;
@@ -73,29 +76,29 @@ RunModel_GR4H <- function(InputsModel,RunOptions,Param) {
                                         verbose = FALSE)
   }
   
-  ##Output_data_preparation
-  ##OutputsModel_only
+  ## Output_data_preparation
+  ## OutputsModel_only
   if (ExportDatesR==FALSE & ExportStateEnd==FALSE) {
     OutputsModel <- lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]);
     names(OutputsModel) <- FortranOutputs[IndOutputs];      }
-  ##DatesR_and_OutputsModel_only
+  ## DatesR_and_OutputsModel_only
   if (ExportDatesR==TRUE & ExportStateEnd==FALSE) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs]);      }
-  ##OutputsModel_and_SateEnd_only
+  ## OutputsModel_and_SateEnd_only
   if (ExportDatesR==FALSE & ExportStateEnd==TRUE) {
     OutputsModel <- c( lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c(FortranOutputs[IndOutputs],"StateEnd");      }
-  ##DatesR_and_OutputsModel_and_SateEnd
+  ## DatesR_and_OutputsModel_and_SateEnd
   if ((ExportDatesR==TRUE & ExportStateEnd==TRUE) | "all" %in% RunOptions$Outputs_Sim) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs],"StateEnd");      }
   
-  ##End
+  ## End
   rm(RESULTS); 
   class(OutputsModel) <- c("OutputsModel","hourly","GR");
   return(OutputsModel);
diff --git a/R/RunModel_GR4J.R b/R/RunModel_GR4J.R
index 2c80586e066550808383442ab9ff6bea924c7e22..0bcade5ff642e5e25a25493ee22839d1a275c205 100644
--- a/R/RunModel_GR4J.R
+++ b/R/RunModel_GR4J.R
@@ -1,9 +1,12 @@
 RunModel_GR4J <- function(InputsModel,RunOptions,Param) {
   
+  
+  ## Initialization of variables
   NParam <- 4;
   FortranOutputs <- .FortranOutputs(GR = "GR4J")$GR
   
-  ##Arguments_check
+  
+  ## Arguments_check
   if (inherits(InputsModel,"InputsModel")==FALSE) { stop("'InputsModel' must be of class 'InputsModel'") }  
   if (inherits(InputsModel,"daily"      )==FALSE) { stop("'InputsModel' must be of class 'daily'      ") }  
   if (inherits(InputsModel,"GR"         )==FALSE) { stop("'InputsModel' must be of class 'GR'         ") }  
@@ -28,26 +31,26 @@ RunModel_GR4J <- function(InputsModel,RunOptions,Param) {
     Param[4L] <- Param_X4_threshold
   }
   
-  ##Input_data_preparation
+  ## Input_data_preparation
   if (identical(RunOptions$IndPeriod_WarmUp,as.integer(0))) { RunOptions$IndPeriod_WarmUp <- NULL; }
   IndPeriod1   <- c(RunOptions$IndPeriod_WarmUp,RunOptions$IndPeriod_Run);
   LInputSeries <- as.integer(length(IndPeriod1))
   if ("all" %in% RunOptions$Outputs_Sim) { IndOutputs <- as.integer(1:length(FortranOutputs)); 
   } else { IndOutputs <- which(FortranOutputs %in% RunOptions$Outputs_Sim);  }
-  ##Input_data_preparation      
+  ## Input_data_preparation      
   IndPeriod2     <- (length(RunOptions$IndPeriod_WarmUp)+1):LInputSeries;
   ExportDatesR   <- "DatesR"   %in% RunOptions$Outputs_Sim;
   ExportStateEnd <- "StateEnd" %in% RunOptions$Outputs_Sim;
   
-  ##Use_of_IniResLevels
+  ## Use_of_IniResLevels
   if (!is.null(RunOptions$IniResLevels)) {
-    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1];  ### production store level (mm)
-    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[3];  ### routing store level (mm)
+    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1]; ### production store level (mm)
+    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[3]; ### routing store level (mm)
   }
   
-  ##Call_fortan
+  ## Call_fortan
   RESULTS <- .Fortran("frun_gr4j",PACKAGE="airGR",
-                      ##inputs
+                      ## inputs
                       LInputs=LInputSeries,                             ### length of input and output series
                       InputsPrecip=InputsModel$Precip[IndPeriod1],      ### input series of total precipitation [mm/d]
                       InputsPE=InputsModel$PotEvap[IndPeriod1],         ### input series potential evapotranspiration [mm/d]
@@ -57,9 +60,9 @@ RunModel_GR4J <- function(InputsModel,RunOptions,Param) {
                       StateStart=RunOptions$IniStates,                  ### state variables used when the model run starts
                       NOutputs=as.integer(length(IndOutputs)),          ### number of output series
                       IndOutputs=IndOutputs,                            ### indices of output series
-                      ##outputs
-                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)),  ### output series [mm]
-                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                  ### state variables at the end of the model run
+                      ## outputs
+                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)), ### output series [mm]
+                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                 ### state variables at the end of the model run
   )
   RESULTS$Outputs[ round(RESULTS$Outputs ,3)==(-999.999)] <- NA;
   RESULTS$StateEnd[round(RESULTS$StateEnd,3)==(-999.999)] <- NA;
@@ -72,29 +75,29 @@ RunModel_GR4J <- function(InputsModel,RunOptions,Param) {
                                         verbose = FALSE)
   }
   
-  ##Output_data_preparation
-  ##OutputsModel_only
+  ## Output_data_preparation
+  ## OutputsModel_only
   if (ExportDatesR==FALSE & ExportStateEnd==FALSE) {
     OutputsModel <- lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]);
     names(OutputsModel) <- FortranOutputs[IndOutputs];      }
-  ##DatesR_and_OutputsModel_only
+  ## DatesR_and_OutputsModel_only
   if (ExportDatesR==TRUE & ExportStateEnd==FALSE) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs]);      }
-  ##OutputsModel_and_StateEnd_only
+  ## OutputsModel_and_StateEnd_only
   if (ExportDatesR==FALSE & ExportStateEnd==TRUE) {
     OutputsModel <- c( lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c(FortranOutputs[IndOutputs],"StateEnd");      }
-  ##DatesR_and_OutputsModel_and_StateEnd
+  ## DatesR_and_OutputsModel_and_StateEnd
   if ((ExportDatesR==TRUE & ExportStateEnd==TRUE) | "all" %in% RunOptions$Outputs_Sim) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs],"StateEnd");      }
   
-  ##End
+  ## End
   rm(RESULTS); 
   class(OutputsModel) <- c("OutputsModel","daily","GR");
   return(OutputsModel);
diff --git a/R/RunModel_GR5H.R b/R/RunModel_GR5H.R
index 46c752689f77c9846d6322ff1525a38f4668354e..f57c6b74f3f99305d93d1909b33fcaf089f55ba9 100644
--- a/R/RunModel_GR5H.R
+++ b/R/RunModel_GR5H.R
@@ -1,5 +1,7 @@
 RunModel_GR5H <- function(InputsModel,RunOptions,Param) {
   
+  
+  ## Initialization of variables
   NParam <- 5;
   FortranOutputs <- .FortranOutputs(GR = "GR5H")$GR
   IsIntStore <- inherits(RunOptions, "interception")
@@ -9,7 +11,8 @@ RunModel_GR5H <- function(InputsModel,RunOptions,Param) {
     Imax <- -99
   }
   
-  ##Arguments_check
+  
+  ## Arguments_check
   if (inherits(InputsModel,"InputsModel")==FALSE) { stop("'InputsModel' must be of class 'InputsModel'") }  
   if (inherits(InputsModel,"hourly"     )==FALSE) { stop("'InputsModel' must be of class 'hourly'     ") }  
   if (inherits(InputsModel,"GR"         )==FALSE) { stop("'InputsModel' must be of class 'GR'         ") }  
@@ -34,30 +37,30 @@ RunModel_GR5H <- function(InputsModel,RunOptions,Param) {
     Param[4L] <- Param_X4_threshold
   }     
   
-  ##Input_data_preparation
+  ## Input_data_preparation
   if (identical(RunOptions$IndPeriod_WarmUp,as.integer(0))) { RunOptions$IndPeriod_WarmUp <- NULL; }
   IndPeriod1   <- c(RunOptions$IndPeriod_WarmUp,RunOptions$IndPeriod_Run);
   LInputSeries <- as.integer(length(IndPeriod1))
   if ("all" %in% RunOptions$Outputs_Sim) { IndOutputs <- as.integer(1:length(FortranOutputs)); 
   } else { IndOutputs <- which(FortranOutputs %in% RunOptions$Outputs_Sim);  }
   
-  ##Output_data_preparation
+  ## Output_data_preparation
   IndPeriod2     <- (length(RunOptions$IndPeriod_WarmUp)+1):LInputSeries;
   ExportDatesR   <- "DatesR"   %in% RunOptions$Outputs_Sim;
   ExportStateEnd <- "StateEnd" %in% RunOptions$Outputs_Sim;
   
-  ##Use_of_IniResLevels
+  ## Use_of_IniResLevels
   if (!is.null(RunOptions$IniResLevels)) {
-    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1];  ### production store level (mm)
-    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[3];  ### routing store level (mm)
+    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1]; ### production store level (mm)
+    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[3]; ### routing store level (mm)
     if (IsIntStore) {
-      RunOptions$IniStates[4] <- RunOptions$IniResLevels[4] * Imax;  ### interception store level (mm)
+      RunOptions$IniStates[4] <- RunOptions$IniResLevels[4] * Imax; ### interception store level (mm)
     }
   }
   
-  ##Call_fortan
+  ## Call_fortan
   RESULTS <- .Fortran("frun_gr5h",PACKAGE="airGR",
-                      ##inputs
+                      ## inputs
                       LInputs=LInputSeries,                             ### length of input and output series
                       InputsPrecip=InputsModel$Precip[IndPeriod1],      ### input series of total precipitation [mm/h]
                       InputsPE=InputsModel$PotEvap[IndPeriod1],         ### input series potential evapotranspiration [mm/h]
@@ -68,9 +71,9 @@ RunModel_GR5H <- function(InputsModel,RunOptions,Param) {
                       Imax=Imax,                                        ### maximal capacity of interception store
                       NOutputs=as.integer(length(IndOutputs)),          ### number of output series
                       IndOutputs=IndOutputs,                            ### indices of output series
-                      ##outputs
-                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)),  ### output series [mm or mm/h]
-                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                  ### state variables at the end of the model run
+                      ## outputs
+                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)), ### output series [mm or mm/h]
+                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                 ### state variables at the end of the model run
   )
   RESULTS$Outputs[ round(RESULTS$Outputs ,3)==(-999.999)] <- NA;
   RESULTS$StateEnd[round(RESULTS$StateEnd,3)==(-999.999)] <- NA;
@@ -84,29 +87,29 @@ RunModel_GR5H <- function(InputsModel,RunOptions,Param) {
                                         verbose = FALSE)
   }
   
-  ##Output_data_preparation
-  ##OutputsModel_only
+  ## Output_data_preparation
+  ## OutputsModel_only
   if (ExportDatesR==FALSE & ExportStateEnd==FALSE) {
     OutputsModel <- lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]);
     names(OutputsModel) <- FortranOutputs[IndOutputs];      }
-  ##DatesR_and_OutputsModel_only
+  ## DatesR_and_OutputsModel_only
   if (ExportDatesR==TRUE & ExportStateEnd==FALSE) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs]);      }
-  ##OutputsModel_and_StateEnd_only
+  ## OutputsModel_and_StateEnd_only
   if (ExportDatesR==FALSE & ExportStateEnd==TRUE) {
     OutputsModel <- c( lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c(FortranOutputs[IndOutputs],"StateEnd");      }
-  ##DatesR_and_OutputsModel_and_StateEnd
+  ## DatesR_and_OutputsModel_and_StateEnd
   if ((ExportDatesR==TRUE & ExportStateEnd==TRUE) | "all" %in% RunOptions$Outputs_Sim) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs],"StateEnd");      }
   
-  ##End
+  ## End
   rm(RESULTS); 
   class(OutputsModel) <- c("OutputsModel","hourly","GR");
   if (IsIntStore) {
diff --git a/R/RunModel_GR5J.R b/R/RunModel_GR5J.R
index 5b5b26b1fd89a5a4aa64c8d643110a57f20fc751..e7d4f474eda642d9d9352f3a34d3f94d3f4bd95e 100644
--- a/R/RunModel_GR5J.R
+++ b/R/RunModel_GR5J.R
@@ -1,9 +1,12 @@
 RunModel_GR5J <- function(InputsModel,RunOptions,Param) {
   
+  
+  ## Initialization of variables
   NParam <- 5;
   FortranOutputs <- .FortranOutputs(GR = "GR5J")$GR
   
-  ##Arguments_check
+  
+  ## Arguments_check
   if (inherits(InputsModel,"InputsModel")==FALSE) { stop("'InputsModel' must be of class 'InputsModel'") }  
   if (inherits(InputsModel,"daily"      )==FALSE) { stop("'InputsModel' must be of class 'daily'      ") }  
   if (inherits(InputsModel,"GR"         )==FALSE) { stop("'InputsModel' must be of class 'GR'         ") }  
@@ -28,27 +31,27 @@ RunModel_GR5J <- function(InputsModel,RunOptions,Param) {
     Param[4L] <- Param_X4_threshold
   }      
   
-  ##Input_data_preparation
+  ## Input_data_preparation
   if (identical(RunOptions$IndPeriod_WarmUp,as.integer(0))) { RunOptions$IndPeriod_WarmUp <- NULL; }
   IndPeriod1   <- c(RunOptions$IndPeriod_WarmUp,RunOptions$IndPeriod_Run);
   LInputSeries <- as.integer(length(IndPeriod1))
   if ("all" %in% RunOptions$Outputs_Sim) { IndOutputs <- as.integer(1:length(FortranOutputs)); 
   } else { IndOutputs <- which(FortranOutputs %in% RunOptions$Outputs_Sim);  }
   
-  ##Output_data_preparation
+  ## Output_data_preparation
   IndPeriod2     <- (length(RunOptions$IndPeriod_WarmUp)+1):LInputSeries;
   ExportDatesR   <- "DatesR"   %in% RunOptions$Outputs_Sim;
   ExportStateEnd <- "StateEnd" %in% RunOptions$Outputs_Sim;
   
-  ##Use_of_IniResLevels
+  ## Use_of_IniResLevels
   if (!is.null(RunOptions$IniResLevels)) {
-    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1];  ### production store level (mm)
-    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[3];  ### routing store level (mm)
+    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1]; ### production store level (mm)
+    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[3]; ### routing store level (mm)
   }
   
-  ##Call_fortan
+  ## Call_fortan
   RESULTS <- .Fortran("frun_gr5j",PACKAGE="airGR",
-                      ##inputs
+                      ## inputs
                       LInputs=LInputSeries,                             ### length of input and output series
                       InputsPrecip=InputsModel$Precip[IndPeriod1],      ### input series of total precipitation [mm/d]
                       InputsPE=InputsModel$PotEvap[IndPeriod1],         ### input series potential evapotranspiration [mm/d]
@@ -58,9 +61,9 @@ RunModel_GR5J <- function(InputsModel,RunOptions,Param) {
                       StateStart=RunOptions$IniStates,                  ### state variables used when the model run starts
                       NOutputs=as.integer(length(IndOutputs)),          ### number of output series
                       IndOutputs=IndOutputs,                            ### indices of output series
-                      ##outputs
-                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)),  ### output series [mm]
-                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                  ### state variables at the end of the model run
+                      ## outputs
+                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)), ### output series [mm]
+                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                 ### state variables at the end of the model run
   )
   RESULTS$Outputs[ round(RESULTS$Outputs ,3)==(-999.999)] <- NA;
   RESULTS$StateEnd[round(RESULTS$StateEnd,3)==(-999.999)] <- NA;
@@ -73,29 +76,29 @@ RunModel_GR5J <- function(InputsModel,RunOptions,Param) {
                                         verbose = FALSE)
   }
   
-  ##Output_data_preparation
-  ##OutputsModel_only
+  ## Output_data_preparation
+  ## OutputsModel_only
   if (ExportDatesR==FALSE & ExportStateEnd==FALSE) {
     OutputsModel <- lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]);
     names(OutputsModel) <- FortranOutputs[IndOutputs];      }
-  ##DatesR_and_OutputsModel_only
+  ## DatesR_and_OutputsModel_only
   if (ExportDatesR==TRUE & ExportStateEnd==FALSE) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs]);      }
-  ##OutputsModel_and_SateEnd_only
+  ## OutputsModel_and_SateEnd_only
   if (ExportDatesR==FALSE & ExportStateEnd==TRUE) {
     OutputsModel <- c( lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c(FortranOutputs[IndOutputs],"StateEnd");      }
-  ##DatesR_and_OutputsModel_and_SateEnd
+  ## DatesR_and_OutputsModel_and_SateEnd
   if ((ExportDatesR==TRUE & ExportStateEnd==TRUE) | "all" %in% RunOptions$Outputs_Sim) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs],"StateEnd");      }
   
-  ##End
+  ## End
   rm(RESULTS); 
   class(OutputsModel) <- c("OutputsModel","daily","GR");
   return(OutputsModel);
diff --git a/R/RunModel_GR6J.R b/R/RunModel_GR6J.R
index 6ac850405453d6e6522fae6de315bc7b8227f2f2..19bdac9911b1bc0fe659c108a666053c781eb93a 100644
--- a/R/RunModel_GR6J.R
+++ b/R/RunModel_GR6J.R
@@ -1,9 +1,12 @@
 RunModel_GR6J <- function(InputsModel,RunOptions,Param) {
   
+  
+  ## Initialization of variables
   NParam <- 6;
   FortranOutputs <- .FortranOutputs(GR = "GR6J")$GR
   
-  ##Arguments_check
+  
+  ## Arguments_check
   if (inherits(InputsModel,"InputsModel")==FALSE) { stop("'InputsModel' must be of class 'InputsModel'") }  
   if (inherits(InputsModel,"daily"      )==FALSE) { stop("'InputsModel' must be of class 'daily'      ") }  
   if (inherits(InputsModel,"GR"         )==FALSE) { stop("'InputsModel' must be of class 'GR'         ") }  
@@ -32,28 +35,28 @@ RunModel_GR6J <- function(InputsModel,RunOptions,Param) {
     Param[6L] <- Param_X1X3X6_threshold
   }      
   
-  ##Input_data_preparation
+  ## Input_data_preparation
   if (identical(RunOptions$IndPeriod_WarmUp,as.integer(0))) { RunOptions$IndPeriod_WarmUp <- NULL; }
   IndPeriod1   <- c(RunOptions$IndPeriod_WarmUp,RunOptions$IndPeriod_Run);
   LInputSeries <- as.integer(length(IndPeriod1))
   if ("all" %in% RunOptions$Outputs_Sim) { IndOutputs <- as.integer(1:length(FortranOutputs)); 
   } else { IndOutputs <- which(FortranOutputs %in% RunOptions$Outputs_Sim);  }
   
-  ##Output_data_preparation
+  ## Output_data_preparation
   IndPeriod2     <- (length(RunOptions$IndPeriod_WarmUp)+1):LInputSeries;
   ExportDatesR   <- "DatesR"   %in% RunOptions$Outputs_Sim;
   ExportStateEnd <- "StateEnd" %in% RunOptions$Outputs_Sim;
   
-  ##Use_of_IniResLevels
+  ## Use_of_IniResLevels
   if (!is.null(RunOptions$IniResLevels)) {
-    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1];  ### production store level (mm)
-    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[3];  ### routing store level (mm)
-    RunOptions$IniStates[3] <- RunOptions$IniResLevels[3]            ### exponential store level (mm)
+    RunOptions$IniStates[1] <- RunOptions$IniResLevels[1]*Param[1]; ### production store level (mm)
+    RunOptions$IniStates[2] <- RunOptions$IniResLevels[2]*Param[3]; ### routing store level (mm)
+    RunOptions$IniStates[3] <- RunOptions$IniResLevels[3]           ### exponential store level (mm)
   }
   
-  ##Call_fortan
+  ## Call_fortan
   RESULTS <- .Fortran("frun_gr6j",PACKAGE="airGR",
-                      ##inputs
+                      ## inputs
                       LInputs=LInputSeries,                             ### length of input and output series
                       InputsPrecip=InputsModel$Precip[IndPeriod1],      ### input series of total precipitation [mm/d]
                       InputsPE=InputsModel$PotEvap[IndPeriod1],         ### input series potential evapotranspiration [mm/d]
@@ -63,9 +66,9 @@ RunModel_GR6J <- function(InputsModel,RunOptions,Param) {
                       StateStart=RunOptions$IniStates,                  ### state variables used when the model run starts
                       NOutputs=as.integer(length(IndOutputs)),          ### number of output series
                       IndOutputs=IndOutputs,                            ### indices of output series
-                      ##outputs
-                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)),  ### output series [mm]
-                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                  ### state variables at the end of the model run
+                      ## outputs
+                      Outputs=matrix(as.double(-999.999),nrow=LInputSeries,ncol=length(IndOutputs)), ### output series [mm]
+                      StateEnd=rep(as.double(-999.999),length(RunOptions$IniStates))                 ### state variables at the end of the model run
   )
   RESULTS$Outputs[ round(RESULTS$Outputs ,3)==(-999.999)] <- NA;
   RESULTS$StateEnd[round(RESULTS$StateEnd,3)==(-999.999)] <- NA;
@@ -78,29 +81,29 @@ RunModel_GR6J <- function(InputsModel,RunOptions,Param) {
                                         verbose = FALSE)
   }
   
-  ##Output_data_preparation
-  ##OutputsModel_only
+  ## Output_data_preparation
+  ## OutputsModel_only
   if (ExportDatesR==FALSE & ExportStateEnd==FALSE) {
     OutputsModel <- lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]);
     names(OutputsModel) <- FortranOutputs[IndOutputs];      }
-  ##DatesR_and_OutputsModel_only
+  ## DatesR_and_OutputsModel_only
   if (ExportDatesR==TRUE & ExportStateEnd==FALSE) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs]);      }
-  ##OutputsModel_and_SateEnd_only
+  ## OutputsModel_and_SateEnd_only
   if (ExportDatesR==FALSE & ExportStateEnd==TRUE) {
     OutputsModel <- c( lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c(FortranOutputs[IndOutputs],"StateEnd");      }
-  ##DatesR_and_OutputsModel_and_SateEnd
+  ## DatesR_and_OutputsModel_and_SateEnd
   if ((ExportDatesR==TRUE & ExportStateEnd==TRUE) | "all" %in% RunOptions$Outputs_Sim) {
     OutputsModel <- c( list(InputsModel$DatesR[RunOptions$IndPeriod_Run]),
                        lapply(seq_len(RESULTS$NOutputs), function(i) RESULTS$Outputs[IndPeriod2,i]),
                        list(RESULTS$StateEnd) );
     names(OutputsModel) <- c("DatesR",FortranOutputs[IndOutputs],"StateEnd");      }
   
-  ##End
+  ## End
   rm(RESULTS); 
   class(OutputsModel) <- c("OutputsModel","daily","GR");
   return(OutputsModel);