diff --git a/src/checkCFG.m b/src/checkCFG.m
index a350f0e3..b6666647 100644
--- a/src/checkCFG.m
+++ b/src/checkCFG.m
@@ -12,7 +12,7 @@
 
     %% list the defaults to set
 
-    fieldsToSet.verbose = false;
+    fieldsToSet.verbose = 0;
 
     fieldsToSet.useGUI = false;
 
diff --git a/src/createFilename.m b/src/createFilename.m
index 5a9a5da7..cf4e350f 100644
--- a/src/createFilename.m
+++ b/src/createFilename.m
@@ -201,7 +201,7 @@
 
 function talkToMe(cfg)
 
-    if cfg.verbose
+    if cfg.verbose > 0
 
         fprintf(1, '\nData will be saved in this directory:\n\t%s\n', ...
             fullfile(cfg.dir.outputSubject, cfg.fileName.modality));
diff --git a/src/miss_hit.cfg b/src/miss_hit.cfg
index fce7fa45..25cb5611 100644
--- a/src/miss_hit.cfg
+++ b/src/miss_hit.cfg
@@ -1,3 +1,10 @@
+# style guide (https://florianschanda.github.io/miss_hit/style_checker.html)
 line_length: 100
 regex_function_name: "[a-z]+(([A-Z]){1}[A-Za-z]+)*"
-suppress_rule: "copyright_notice"
\ No newline at end of file
+suppress_rule: "copyright_notice"
+
+# metrics limit for the code quality (https://florianschanda.github.io/miss_hit/metrics.html)
+metric "cnest": limit 4
+metric "file_length": limit 500
+metric "cyc": limit 15
+metric "parameters": limit 6
\ No newline at end of file
diff --git a/src/saveEventsFile.m b/src/saveEventsFile.m
index eedcf905..949161ff 100644
--- a/src/saveEventsFile.m
+++ b/src/saveEventsFile.m
@@ -219,14 +219,14 @@ function printHeaderExtraColumns(logFile)
             warning('saveEventsFile:missingData', ...
                 'Missing some %s data for this event.', namesExtraColumns{iExtraColumn});
 
-            if cfg.verbose
+            if cfg.verbose > 1
                 disp(logFile(iEvent));
             end
 
         elseif ~ischar(data) && all(isnan(data))
             warning('Missing %s data for this event.', namesExtraColumns{iExtraColumn});
 
-            if cfg.verbose
+            if cfg.verbose > 1
                 disp(logFile(iEvent));
             end
         end
@@ -297,11 +297,11 @@ function printHeaderExtraColumns(logFile)
 
         else
 
-            printData(logFile(1).fileID, onset);
-            printData(logFile(1).fileID, duration);
-            printData(logFile(1).fileID, trial_type);
+            printData(logFile(1).fileID, onset, cfg);
+            printData(logFile(1).fileID, duration, cfg);
+            printData(logFile(1).fileID, trial_type, cfg);
 
-            printExtraColumns(logFile, iEvent);
+            printExtraColumns(logFile, iEvent, cfg);
 
             fprintf(logFile(1).fileID, '\n');
             fprintf(1, '\n');
@@ -311,7 +311,7 @@ function printHeaderExtraColumns(logFile)
 
 end
 
-function printExtraColumns(logFile, iEvent)
+function printExtraColumns(logFile, iEvent, cfg)
     % loops through the extra columns and print them
 
     namesExtraColumns = returnNamesExtraColumns(logFile);
@@ -320,26 +320,32 @@ function printExtraColumns(logFile, iEvent)
 
         data = logFile(iEvent).(namesExtraColumns{iExtraColumn});
 
-        printData(logFile(1).fileID, data);
+        printData(logFile(1).fileID, data, cfg);
 
     end
 
 end
 
-function printData(output, data)
+function printData(output, data, cfg)
     % write char
     % for numeric data we replace any nan by n/a
     if ischar(data)
         fprintf(output, '%s\t', data);
-        fprintf(1, '%s\t', data);
+        if cfg.verbose > 0
+            fprintf(1, '%s\t', data);
+        end
     else
         for i = 1:numel(data)
             if isnan(data(i))
                 fprintf(output, '%s\t', 'n/a');
-                fprintf(1, '%s\t', 'n/a');
+                if cfg.verbose > 0
+                    fprintf(1, '%s\t', 'n/a');
+                end
             else
                 fprintf(output, '%f\t', data(i));
-                fprintf(1, '%f\t', data(i));
+                if cfg.verbose > 0
+                    fprintf(1, '%f\t', data(i));
+                end
             end
         end
     end
@@ -384,7 +390,7 @@ function errorSaveEventsFile(identifier)
 
 function talkToMe(cfg, logFile)
 
-    if cfg.verbose
+    if cfg.verbose > 0
 
         fprintf(1, '\nData were saved in this file:\n\n%s\n\n', ...
             fullfile( ...
diff --git a/src/subfun/printCreditsCppBids.m b/src/subfun/printCreditsCppBids.m
index 5a6f2c95..e9ff763a 100644
--- a/src/subfun/printCreditsCppBids.m
+++ b/src/subfun/printCreditsCppBids.m
@@ -7,19 +7,19 @@ function printCreditsCppBids(cfg)
         version = 'v1.0.0';
     end
 
-    verbose = true;
+    verbose = 2;
     if ~isempty(cfg) && isfield(cfg, 'verbose') && ~isempty(cfg.verbose)
         verbose = cfg.verbose;
     end
 
-    if verbose
+    if verbose > 1
 
         contributors = { ...
             'Rémi Gau', ...
             'Marco Barilari', ...
             'Ceren Battal'};
 
-        % DOI_URL = 'https://doi.org/10.5281/zenodo.3554331.';
+        DOI_URL = 'https://doi.org/10.5281/zenodo.4007674';
 
         repoURL = 'https://github.com/cpp-lln-lab/CPP_BIDS';
 
@@ -44,7 +44,7 @@ function printCreditsCppBids(cfg)
         end
         fprintf('\b\n\n');
 
-        % fprintf('Please cite using the following DOI: \n %s\n\n', DOI_URL)
+        fprintf('Please cite using the following DOI: \n %s\n\n', DOI_URL);
 
         fprintf('For bug report, suggestions or contributions see: \n %s\n\n', repoURL);
 
diff --git a/tests/test_checkCFG.m b/tests/test_checkCFG.m
index 5deb56c4..94ec3e34 100644
--- a/tests/test_checkCFG.m
+++ b/tests/test_checkCFG.m
@@ -29,7 +29,7 @@ function test_checkCfgBasic()
     %% set up
     outputDir = fullfile(fileparts(mfilename('fullpath')), '..', 'output');
 
-    cfg.verbose = false;
+    cfg.verbose = 0;
 
     cfg.subject.subjectNb = 1;
     cfg.subject.runNb = 1;