diff --git a/.gitignore b/.gitignore
index 4e3dce7..7a91d23 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /resources/data
 /scratch
 .phpcs-cache
+*~undo-tree~
diff --git a/app/src/Commands/InvoiceCommand.php b/app/src/Commands/InvoiceCommand.php
index 35a46df..91c7595 100644
--- a/app/src/Commands/InvoiceCommand.php
+++ b/app/src/Commands/InvoiceCommand.php
@@ -103,7 +103,7 @@ class InvoiceCommand extends Command
         );
         $this->addOption(
             'recipients',
-            'r',
+            't',
             InputOption::VALUE_REQUIRED,
             'Comma separated list of recipients that should get the exported pdf.'
         );
@@ -129,7 +129,7 @@ class InvoiceCommand extends Command
         );
         $this->addOption(
             'report',
-            't',
+            'r',
             InputOption::VALUE_OPTIONAL,
             'Show time tracked for report.',
             FALSE
@@ -164,6 +164,10 @@ class InvoiceCommand extends Command
         }
         if ($youtrack = $input->getOption('youtrack')) {
             $report_id = $this->youtrack->getReportId();
+            $cache_clear_status = $this->youtrack->clearReportCache($report_id);
+            if ($output->isVerbose()) {
+                $output->writeln("Report cache cleared, status: {$cache_clear_status}");
+            }
             $file = $this->youtrack->downloadReport($report_id);
         }
         if ($input->hasParameterOption('--expenses') || $input->hasParameterOption('-e')) {
@@ -174,7 +178,9 @@ class InvoiceCommand extends Command
         }
         if ($youtrack || $file = $input->getOption('file')) {
             // Youtrack can also provide a file name.
-            // var_dump($file);
+            if ($output->isVerbose()) {
+                $output->writeln("Csv file downloaded to: <info>{$file}</info>");
+            }
             $data  = $this->csv->getInvoiceData($file);
             if (!empty($expenses)) {
                 $data = array_merge($data, $expenses);
diff --git a/app/src/Commands/ReportCommand.php b/app/src/Commands/ReportCommand.php
index 67d54ea..2e8cf3d 100644
--- a/app/src/Commands/ReportCommand.php
+++ b/app/src/Commands/ReportCommand.php
@@ -73,12 +73,25 @@ class ReportCommand extends Command {
         elseif ($report = $this->config->get('tracking_service.youtrack.report.default')) {
             $this->trackingService->setReportId($report);
         }
+        elseif ($timeRange = $input->getParameterOption('time-range')) {
+            // @TODO: Implement time range option:
+            //   - Request workTime items from tracking service
+            //   - Filter them, join by issue, project ...
+            $output->writeln('<error>This option is not supported yet.</error>');
+            return Command::FAILURE;
+        }
         // Currently we only support csv download.
         $report_id = $this->trackingService->getReportId();
         $report_name = $reports[$report_id];
-        $this->trackingService->clearReportCache($report_id);
+        // Code duplication.
+        $cache_clear_status = $this->timeTrackingService->clearReportCache($report_id);
+        if ($output->isVerbose()) {
+            $output->writeln("Report cache cleared, status: {$cache_clear_status}");
+        }
         $file = $this->trackingService->downloadReport($report_id);
-        // var_dump($file);
+        if ($output->isVerbose()) {
+            $output->writeln("Csv file downloaded to: <info>{$file}</info>");
+        }
         $output->writeln("report: <info>{$report_name}</info>");
         $data = $this->csv->generateReportTable($file);
         $table = $this->buildTable($output, $data);
diff --git a/app/src/Utils/CsvReport/ReportCsv.php b/app/src/Utils/CsvReport/ReportCsv.php
index e331ac2..f33d326 100644
--- a/app/src/Utils/CsvReport/ReportCsv.php
+++ b/app/src/Utils/CsvReport/ReportCsv.php
@@ -128,8 +128,8 @@ class ReportCsv  implements ReportCsvInterface
         foreach ($data as $invoice_element) {
             if ($invoice_element instanceof ExpensesInterface) {
                 if (!isset($added_expenses)) {
-                    // @TODO - separator 0: Make next line bold and centered.
-                    $rows[] = 0;
+                    // Separator 0: Make next line bold and centered.
+                    $rows[] = ReportCsvInterface::SEPARATOR_HARD;
                     $rows[] = [
                         null,
                         null,
@@ -137,7 +137,7 @@ class ReportCsv  implements ReportCsvInterface
                         'EUR',
                     ];
                     // Don't make next line bold. See RprtCli\PdfExport\PdfExportService::parsedDataToHtml.
-                    $rows[] = FALSE;
+                    $rows[] = ReportCsvInterface::SEPARATOR_SOFT;
                     $added_expenses = TRUE;
                 }
                 $add_separator = TRUE;
@@ -151,7 +151,7 @@ class ReportCsv  implements ReportCsvInterface
             }
         }
         if ($add_separator) {
-            $rows[] = null;
+            $rows[] = ReportCsvInterface::SEPARATOR_MEDIUM;
         }
         $rows[] = [null, null, 'Gessamt brutto', number_format($totalPrice, 2, ',', '.')];
         return $rows;
@@ -184,9 +184,9 @@ class ReportCsv  implements ReportCsvInterface
             $previous_project = explode('-', $previous)[0];
             if ($project !== $previous_project) {
                 // When project changes, add a sum of time for that project.
-                $table[] = null;
+                $table[] = ReportCsvInterface::SEPARATOR_MEDIUM;
                 $table[] = [null, $previous_project, null, $project_time/60];
-                $table[] = null;
+                $table[] = ReportCsvInterface::SEPARATOR_MEDIUM;
                 $time_sum += (float) $project_time;
                 $project_time = 0;
                 $all_projects[] = $project;
@@ -196,12 +196,12 @@ class ReportCsv  implements ReportCsvInterface
             $table[] = array_values($line);
         }
         // Add sum for the last project.
-        $table[] = null;
+        $table[] = ReportCsvInterface::SEPARATOR_MEDIUM;
         $table[] = [null, $project, null, $project_time / 60];
         $time_sum += (float) $project_time;
         $all_projects[] = $project;
         // Add a sum of time for whole day.
-        $table[] = null;
+        $table[] = ReportCsvInterface::SEPARATOR_MEDIUM;
         $table[] = [null, implode(', ', $all_projects), null, $time_sum/60];
         return $table;
     }
diff --git a/app/src/Utils/CsvReport/ReportCsvInterface.php b/app/src/Utils/CsvReport/ReportCsvInterface.php
index 75adc85..501a29c 100644
--- a/app/src/Utils/CsvReport/ReportCsvInterface.php
+++ b/app/src/Utils/CsvReport/ReportCsvInterface.php
@@ -9,6 +9,22 @@ namespace RprtCli\Utils\CsvReport;
  */
 interface ReportCsvInterface
 {
+
+    /**
+     * Normal separator.
+     */
+    const SEPARATOR_SOFT = FALSE;
+
+    /**
+     * Medium separator. Next line bold.
+     */
+    const SEPARATOR_MEDIUM = NULL;
+
+    /**
+     * Next line should be bold and centered.
+     */
+    const SEPARATOR_HARD = 0;
+
     /**
      * Returns array of hours per configured projects.
      *
diff --git a/app/src/Utils/PdfExport/PdfExportService.php b/app/src/Utils/PdfExport/PdfExportService.php
index 6ef2185..ac41cda 100644
--- a/app/src/Utils/PdfExport/PdfExportService.php
+++ b/app/src/Utils/PdfExport/PdfExportService.php
@@ -7,6 +7,7 @@ namespace RprtCli\Utils\PdfExport;
 use Exception;
 use RprtCli\Utils\Configuration\ConfigurationInterface;
 use Mpdf\Output\Destination;
+use RprtCli\Utils\CsvReport\ReportCsvInterface;
 
 class PdfExportService implements PdfExportInterface {
 
@@ -59,10 +60,10 @@ class PdfExportService implements PdfExportInterface {
         $table .= '</tr></thead><tbody>';
         foreach ($data as $row_index => $row) {
             if (!$row) {
-                if ($row === NULL) {
+                if ($row === ReportCsvInterface::SEPARATOR_MEDIUM) {
                     $classes = 'bold';
                 }
-                elseif ($row === 0) {
+                elseif ($row === ReportCsvInterface::SEPARATOR_HARD) {
                     $classes = 'bold center';
                 }
                 continue;
diff --git a/app/src/Utils/TimeTrackingServices/YoutrackService.php b/app/src/Utils/TimeTrackingServices/YoutrackService.php
index e3bc97f..df184ac 100644
--- a/app/src/Utils/TimeTrackingServices/YoutrackService.php
+++ b/app/src/Utils/TimeTrackingServices/YoutrackService.php
@@ -104,7 +104,7 @@ class YoutrackService implements YoutrackInterface
         ]);
 
         // Write csv response test into temporary file.
-        $csv_file = tempnam(sys_get_temp_dir(), 'yt_csv_');
+        $csv_file = tempnam(sys_get_temp_dir(), "rprt-cli/{$report_id}_");
         file_put_contents($csv_file, $csv_response->getBody());
         return $csv_file;
     }
@@ -113,7 +113,7 @@ class YoutrackService implements YoutrackInterface
         if (isset($this->ytToken)) {
             return $this->ytToken;
         }
-        $yt_token = $this->config->get('tracking_service.youtrack.auth_token', FALSE); // 
+        $yt_token = $this->config->get('tracking_service.youtrack.auth_token', FALSE);
         if (!$yt_token) {
             $yt_token = readline('Enter your youtrack authentication token: ');
         }
@@ -184,8 +184,9 @@ class YoutrackService implements YoutrackInterface
             'headers' => $this->getHeaders(),
             'json' => $post,
         ]);
-        $body = (string) $response->getBody()->getContents();
+        // $body = (string) $response->getBody()->getContents();
         // var_dump($body);
+        return $response->getStatusCode();
     }
 
 }