diff --git a/.clang-format b/.clang-format
index a043404..08a6e94 100644
--- a/.clang-format
+++ b/.clang-format
@@ -41,7 +41,7 @@ BreakBeforeBinaryOperators: None
 BreakBeforeTernaryOperators: true
 BreakConstructorInitializers: BeforeColon
 BreakInheritanceList: BeforeColon
-ColumnLimit: 100
+ColumnLimit: 120
 CompactNamespaces: false
 ContinuationIndentWidth: 4
 Cpp11BracedListStyle: true
diff --git a/.vscode/settings.json b/.vscode/settings.json
index d24ff8e..eef27fa 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -85,6 +85,9 @@
   },
   "clang-tidy.buildPath": "builddir/",
   "clangd.onConfigChanged": "restart",
-  "C_Cpp.default.compileCommands": "/home/moritz/Projekte/ptouch-prnt/builddir/compile_commands.json",
-  "gcovViewer.buildDirectories": ["/home/moritz/Projekte/ptouch-prnt/builddir"]
+  "C_Cpp.default.compileCommands": "/home/moritz/src/ptouch-prnt/builddir/compile_commands.json",
+  "gcovViewer.buildDirectories": [
+    "/home/moritz/Projekte/ptouch-prnt/builddir"
+  ],
+  "C_Cpp.default.configurationProvider": "mesonbuild.mesonbuild"
 }
diff --git a/meson.build b/meson.build
index 2ad425a..2c23677 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project('ptprnt', 'cpp',
     version: 'v0.1.0-'+run_command('git', 'rev-parse',  '--short', 'HEAD', check: true).stdout().strip(),
     license: 'GPLv3',
-    default_options : ['c_std=c11', 'cpp_std=c++17', 'b_sanitize=none', 'b_lto=true', 'b_lto_mode=thin', 'b_thinlto_cache=true']    
+    default_options : ['c_std=c11', 'cpp_std=c++20', 'b_sanitize=none', 'b_lto=true', 'b_lto_mode=thin', 'b_thinlto_cache=true']    
 )
 
 usb_dep = dependency('libusb-1.0')
diff --git a/src/P700Printer.cpp b/src/P700Printer.cpp
index 6632294..7d60878 100644
--- a/src/P700Printer.cpp
+++ b/src/P700Printer.cpp
@@ -37,7 +37,7 @@
 #include "spdlog/fmt/bin_to_hex.h"
 
 // as long as DRYRUN is defined, no data is actually send to the printer, we need to save some tape ;)
-//#define DRYRUN
+#define DRYRUN
 
 namespace ptprnt::printer {
 
@@ -66,15 +66,14 @@ const PrinterInfo P700Printer::getPrinterInfo() {
 
 const PrinterStatus P700Printer::getPrinterStatus() {
     using namespace std::chrono_literals;
-    std::vector<uint8_t> getStatusCmd({0x1b, 0x69, 0x53});  // status info request
-    send(getStatusCmd);
+    send(p700::commands::GET_STATUS);
 
     int tx    = 0;
     int tries = 0;
     std::vector<uint8_t> recvBuf(32);
     while (tries++ < MAX_TRIES_GET_STATUS) {
         std::this_thread::sleep_for(100ms);
-        mUsbHndl->bulkTransfer(commands["printerinfo"][0], recvBuf, &tx, 0);
+        mUsbHndl->bulkTransfer(p700::commands::INFO[0], recvBuf, &tx, 0);
     }
 
     return PrinterStatus{.tapeWidthMm = recvBuf[10]};
@@ -131,7 +130,7 @@ bool P700Printer::printBitmap(const graphics::Bitmap<graphics::ALPHA8>& bitmap)
     }
 #endif
 
-    send(commands["rasterstart"]);
+    send(p700::commands::RASTER_START);
     std::vector<uint8_t> rastercmd(4);
     rastercmd[0] = 0x47;
     rastercmd[1] = 0x00;  // size +1
@@ -158,18 +157,18 @@ bool P700Printer::printBitmap(const graphics::Bitmap<graphics::ALPHA8>& bitmap)
         };
     }
 
-    send(commands["eject"]);
+    send(p700::commands::EJECT);
     return true;
 }
 
 bool P700Printer::printText(const std::string& text, uint16_t fontSize) {
-    send(commands["lf"]);
-    send(commands["ff"]);
-    send(commands["eject"]);
+    send(p700::commands::LF);
+    send(p700::commands::FF);
+    send(p700::commands::EJECT);
     return true;
 }
 
-bool P700Printer::send(std::vector<uint8_t>& data) {
+bool P700Printer::send(const std::vector<uint8_t>& data) {
 
     if (mUsbHndl == nullptr || data.size() > 128) {
         spdlog::error("Invalid device handle or invalid data.");
@@ -189,8 +188,7 @@ bool P700Printer::send(std::vector<uint8_t>& data) {
 #endif
 
     if (tx != static_cast<int>(data.size())) {
-        spdlog::error("Could not transfer all data via USB bulk transfer. Only sent {} of {} bytes",
-                      tx, data.size());
+        spdlog::error("Could not transfer all data via USB bulk transfer. Only sent {} of {} bytes", tx, data.size());
         return false;
     }
 
diff --git a/src/P700Printer.hpp b/src/P700Printer.hpp
index 0c26562..f410a73 100644
--- a/src/P700Printer.hpp
+++ b/src/P700Printer.hpp
@@ -31,13 +31,23 @@
 #pragma once
 
 namespace ptprnt::printer {
+namespace p700::commands {
+const cmd_T GET_STATUS{0x1b, 0x69, 0x53};
+const cmd_T RASTER_START{0x1b, 0x69, 0x7a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+const cmd_T INFO{0x1b, 0x69, 0x7a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+const cmd_T PACKBITSON{0x02};
+const cmd_T LF{0x5a};
+const cmd_T FF{0x0c};
+const cmd_T EJECT{0x1a};
+const cmd_T PRINTER_INFO{0x81};
+}  // namespace p700::commands
 
 constexpr uint8_t MAX_TRIES_GET_STATUS = 10;
 
 class P700Printer : public ::ptprnt::IPrinterDriver {
    public:
     P700Printer() = default;
-    ~P700Printer();
+    ~P700Printer() override;
 
     // delete copy ctor and assignment
     P700Printer(const P700Printer&)            = default;
@@ -59,7 +69,7 @@ class P700Printer : public ::ptprnt::IPrinterDriver {
     bool printText(const std::string& text, uint16_t fontSize) override;
 
    private:
-    bool send(std::vector<uint8_t>& data);
+    bool send(const std::vector<uint8_t>& data);
     bool init();
 
     std::shared_ptr<libusbwrap::IUsbDevice> mUsbHndl{nullptr};
@@ -70,16 +80,6 @@ class P700Printer : public ::ptprnt::IPrinterDriver {
                                        .vid        = 0x04f9,
                                        .pid        = 0x2061,
                                        .pixelLines = 128};
-    std::map<std::string, std::vector<uint8_t>> commands{
-        {"rasterstart",
-         {0x1b, 0x69, 0x61,
-          0x01}},  // unique for P700, other printers have the 2 byte set to 0x52 instead of 0x61
-        {"info", {0x1b, 0x69, 0x7a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}},
-        {"packbitson", {0x02}},
-        {"lf", {0x5a}},
-        {"ff", {0x0c}},
-        {"eject", {0x1a}},
-        {"printerinfo", {0x81}}};
 };
 
 }  // namespace ptprnt::printer
\ No newline at end of file
diff --git a/src/PtouchPrint.cpp b/src/PtouchPrint.cpp
index 3f27ce6..e6d6d73 100644
--- a/src/PtouchPrint.cpp
+++ b/src/PtouchPrint.cpp
@@ -113,7 +113,7 @@ int PtouchPrint::run() {
                 return -1;
             }
             label.writeToPng("salat.png");
-            printer->printBitmap(bm);
+            //printer->printBitmap(bm);
         }
     }
 
diff --git a/src/interface/IPrinterDriver.hpp b/src/interface/IPrinterDriver.hpp
index e90dec1..4b5376b 100644
--- a/src/interface/IPrinterDriver.hpp
+++ b/src/interface/IPrinterDriver.hpp
@@ -27,7 +27,6 @@
 #include "libusbwrap/interface/IUsbDevice.hpp"
 
 namespace ptprnt {
-
 class IPrinterDriver {
    public:
     virtual ~IPrinterDriver()                                                     = default;
diff --git a/src/interface/IPrinterTypes.hpp b/src/interface/IPrinterTypes.hpp
index dfcdfbc..ff75fa4 100644
--- a/src/interface/IPrinterTypes.hpp
+++ b/src/interface/IPrinterTypes.hpp
@@ -21,6 +21,7 @@
 
 #include <cstdint>
 #include <string_view>
+#include <vector>
 
 namespace ptprnt {
 
@@ -38,4 +39,6 @@ struct PrinterStatus {
     unsigned int tapeWidthMm    = 0.0;
 };
 
+using cmd_T = std::vector<uint8_t>;
+
 }  // namespace ptprnt
\ No newline at end of file