diff --git a/Marlin/BlinkM.cpp b/Marlin/BlinkM.cpp
index de604ecd3..b340f968c 100644
--- a/Marlin/BlinkM.cpp
+++ b/Marlin/BlinkM.cpp
@@ -5,16 +5,9 @@
 #include "Marlin.h"
 #ifdef BLINKM
 
-#if (ARDUINO >= 100)
-  # include "Arduino.h"
-#else
-  # include "WProgram.h"
-#endif
-
 #include "BlinkM.h"
 
-void SendColors(byte red, byte grn, byte blu)
-{
+void SendColors(byte red, byte grn, byte blu) {
   Wire.begin(); 
   Wire.beginTransmission(0x09);
   Wire.write('o');                    //to disable ongoing script, only needs to be used once
diff --git a/Marlin/BlinkM.h b/Marlin/BlinkM.h
index 513682878..5b802b718 100644
--- a/Marlin/BlinkM.h
+++ b/Marlin/BlinkM.h
@@ -2,13 +2,12 @@
   BlinkM.h
   Library header file for BlinkM library
  */
-#if (ARDUINO >= 100)
-  # include "Arduino.h"
+#if ARDUINO >= 100
+  #include "Arduino.h"
 #else
-  # include "WProgram.h"
+  #include "WProgram.h"
 #endif
 
 #include "Wire.h"
 
 void SendColors(byte red, byte grn, byte blu);
-
diff --git a/Marlin/ConfigurationStore.h b/Marlin/ConfigurationStore.h
index d117d37fb..3dc4a92cf 100644
--- a/Marlin/ConfigurationStore.h
+++ b/Marlin/ConfigurationStore.h
@@ -1,5 +1,5 @@
-#ifndef CONFIG_STORE_H
-#define CONFIG_STORE_H
+#ifndef CONFIGURATIONSTORE_H
+#define CONFIGURATIONSTORE_H
 
 #include "Configuration.h"
 
@@ -19,4 +19,4 @@ void Config_ResetDefault();
   FORCE_INLINE void Config_RetrieveSettings() { Config_ResetDefault(); Config_PrintSettings(); }
 #endif
 
-#endif // __CONFIG_STORE_H
+#endif //CONFIGURATIONSTORE_H
diff --git a/Marlin/cardreader.cpp b/Marlin/cardreader.cpp
index a2dd67831..ad79892b5 100644
--- a/Marlin/cardreader.cpp
+++ b/Marlin/cardreader.cpp
@@ -7,91 +7,69 @@
 
 #ifdef SDSUPPORT
 
+CardReader::CardReader() {
+  filesize = 0;
+  sdpos = 0;
+  sdprinting = false;
+  cardOK = false;
+  saving = false;
+  logging = false;
+  workDirDepth = 0;
+  file_subcall_ctr = 0;
+  memset(workDirParents, 0, sizeof(workDirParents));
 
-
-CardReader::CardReader()
-{
-   filesize = 0;
-   sdpos = 0;
-   sdprinting = false;
-   cardOK = false;
-   saving = false;
-   logging = false;
-   autostart_atmillis=0;
-   workDirDepth = 0;
-   file_subcall_ctr=0;
-   memset(workDirParents, 0, sizeof(workDirParents));
-
-   autostart_stilltocheck=true; //the SD start is delayed, because otherwise the serial cannot answer fast enough to make contact with the host software.
-   autostart_index=0;
+  autostart_stilltocheck = true; //the SD start is delayed, because otherwise the serial cannot answer fast enough to make contact with the host software.
+  autostart_index = 0;
   //power to SD reader
   #if SDPOWER > -1
-    SET_OUTPUT(SDPOWER); 
-    WRITE(SDPOWER,HIGH);
+    SET_OUTPUT(SDPOWER);
+    WRITE(SDPOWER, HIGH);
   #endif //SDPOWER
-  
-  autostart_atmillis=millis()+5000;
+
+  autostart_atmillis = millis() + 5000;
 }
 
-char *createFilename(char *buffer,const dir_t &p) //buffer>12characters
-{
-  char *pos=buffer;
-  for (uint8_t i = 0; i < 11; i++) 
-  {
-    if (p.name[i] == ' ')continue;
-    if (i == 8) 
-    {
-      *pos++='.';
-    }
-    *pos++=p.name[i];
+char *createFilename(char *buffer, const dir_t &p) { //buffer > 12characters
+  char *pos = buffer;
+  for (uint8_t i = 0; i < 11; i++) {
+    if (p.name[i] == ' ') continue;
+    if (i == 8) *pos++ = '.';
+    *pos++ = p.name[i];
   }
-  *pos++=0;
+  *pos++ = 0;
   return buffer;
 }
 
-
-void CardReader::lsDive(const char *prepend, SdFile parent, const char * const match/*=NULL*/)
-{
+void CardReader::lsDive(const char *prepend, SdFile parent, const char * const match/*=NULL*/) {
   dir_t p;
- uint8_t cnt=0;
- 
-  while (parent.readDir(p, longFilename) > 0)
-  {
-    if( DIR_IS_SUBDIR(&p) && lsAction!=LS_Count && lsAction!=LS_GetFilename) // hence LS_SerialPrint
-    {
+  uint8_t cnt = 0;
 
+  while (parent.readDir(p, longFilename) > 0) {
+    if (DIR_IS_SUBDIR(&p) && lsAction != LS_Count && lsAction != LS_GetFilename) { // hence LS_SerialPrint
       char path[FILENAME_LENGTH*2];
       char lfilename[FILENAME_LENGTH];
-      createFilename(lfilename,p);
-      
-      path[0]=0;
-      if(prepend[0]==0) //avoid leading / if already in prepend
-      {
-       strcat(path,"/");
-      }
-      strcat(path,prepend);
-      strcat(path,lfilename);
-      strcat(path,"/");
-      
+      createFilename(lfilename, p);
+
+      path[0] = 0;
+      if (prepend[0] == 0) strcat(path, "/"); //avoid leading / if already in prepend
+      strcat(path, prepend);
+      strcat(path, lfilename);
+      strcat(path, "/");
+
       //Serial.print(path);
-      
+
       SdFile dir;
-      if(!dir.open(parent,lfilename, O_READ))
-      {
-        if(lsAction==LS_SerialPrint)
-        {
+      if (!dir.open(parent, lfilename, O_READ)) {
+        if (lsAction == LS_SerialPrint) {
           SERIAL_ECHO_START;
           SERIAL_ECHOLN(MSG_SD_CANT_OPEN_SUBDIR);
           SERIAL_ECHOLN(lfilename);
         }
       }
-      lsDive(path,dir);
+      lsDive(path, dir);
       //close done automatically by destructor of SdFile
-
-      
     }
-    else
-    {
+    else {
       char pn0 = p.name[0];
       if (pn0 == DIR_NAME_FREE) break;
       if (pn0 == DIR_NAME_DELETED || pn0 == '.' || pn0 == '_') continue;
@@ -99,384 +77,313 @@ void CardReader::lsDive(const char *prepend, SdFile parent, const char * const m
       if (lf0 == '.' || lf0 == '_') continue;
 
       if (!DIR_IS_FILE_OR_SUBDIR(&p)) continue;
-      filenameIsDir=DIR_IS_SUBDIR(&p);
-      
-      
-      if(!filenameIsDir)
-      {
-        if(p.name[8]!='G') continue;
-        if(p.name[9]=='~') continue;
-      }
-      //if(cnt++!=nr) continue;
-      createFilename(filename,p);
-      if(lsAction==LS_SerialPrint)
-      {
+
+      filenameIsDir = DIR_IS_SUBDIR(&p);
+
+      if (!filenameIsDir && (p.name[8] != 'G' || p.name[9] == '~')) continue;
+
+      //if (cnt++ != nr) continue;
+      createFilename(filename, p);
+      if (lsAction == LS_SerialPrint) {
         SERIAL_PROTOCOL(prepend);
         SERIAL_PROTOCOLLN(filename);
       }
-      else if(lsAction==LS_Count)
-      {
+      else if (lsAction == LS_Count) {
         nrFiles++;
-      } 
-      else if(lsAction==LS_GetFilename)
-      {
+      }
+      else if (lsAction == LS_GetFilename) {
         if (match != NULL) {
           if (strcasecmp(match, filename) == 0) return;
         }
         else if (cnt == nrFiles) return;
         cnt++;
-        
       }
     }
   }
 }
 
-void CardReader::ls() 
-{
-  lsAction=LS_SerialPrint;
-  if(lsAction==LS_Count)
-  nrFiles=0;
-
+void CardReader::ls()  {
+  lsAction = LS_SerialPrint;
   root.rewind();
-  lsDive("",root);
+  lsDive("", root);
 }
 
-
-void CardReader::initsd()
-{
+void CardReader::initsd() {
   cardOK = false;
-  if(root.isOpen())
-    root.close();
-#ifdef SDSLOW
-  if (!card.init(SPI_HALF_SPEED,SDSS)
-  #if defined(LCD_SDSS) && (LCD_SDSS != SDSS)
-    && !card.init(SPI_HALF_SPEED,LCD_SDSS)
-  #endif
-    )
-#else
-  if (!card.init(SPI_FULL_SPEED,SDSS)
-  #if defined(LCD_SDSS) && (LCD_SDSS != SDSS)
-    && !card.init(SPI_FULL_SPEED,LCD_SDSS)
+  if (root.isOpen()) root.close();
+
+  #ifdef SDSLOW
+    #define SPI_SPEED SPI_HALF_SPEED
+  #else
+    #define SPI_SPEED SPI_FULL_SPEED
   #endif
-    )
-#endif
-  {
+
+  if (!card.init(SPI_SPEED,SDSS)
+    #if defined(LCD_SDSS) && (LCD_SDSS != SDSS)
+      && !card.init(SPI_SPEED, LCD_SDSS)
+    #endif
+  ) {
     //if (!card.init(SPI_HALF_SPEED,SDSS))
     SERIAL_ECHO_START;
     SERIAL_ECHOLNPGM(MSG_SD_INIT_FAIL);
   }
-  else if (!volume.init(&card))
-  {
+  else if (!volume.init(&card)) {
     SERIAL_ERROR_START;
     SERIAL_ERRORLNPGM(MSG_SD_VOL_INIT_FAIL);
   }
-  else if (!root.openRoot(&volume)) 
-  {
+  else if (!root.openRoot(&volume)) {
     SERIAL_ERROR_START;
     SERIAL_ERRORLNPGM(MSG_SD_OPENROOT_FAIL);
   }
-  else 
-  {
+  else {
     cardOK = true;
     SERIAL_ECHO_START;
     SERIAL_ECHOLNPGM(MSG_SD_CARD_OK);
   }
-  workDir=root;
-  curDir=&root;
+  workDir = root;
+  curDir = &root;
   /*
-  if(!workDir.openRoot(&volume))
-  {
+  if (!workDir.openRoot(&volume)) {
     SERIAL_ECHOLNPGM(MSG_SD_WORKDIR_FAIL);
   }
   */
-  
 }
 
-void CardReader::setroot()
-{
-  /*if(!workDir.openRoot(&volume))
-  {
+void CardReader::setroot() {
+  /*if (!workDir.openRoot(&volume)) {
     SERIAL_ECHOLNPGM(MSG_SD_WORKDIR_FAIL);
   }*/
-  workDir=root;
-  
-  curDir=&workDir;
+  workDir = root;
+  curDir = &workDir;
 }
-void CardReader::release()
-{
+
+void CardReader::release() {
   sdprinting = false;
   cardOK = false;
 }
 
-void CardReader::startFileprint()
-{
-  if(cardOK)
-  {
+void CardReader::startFileprint() {
+  if (cardOK) {
     sdprinting = true;
   }
 }
 
-void CardReader::pauseSDPrint()
-{
-  if(sdprinting)
-  {
-    sdprinting = false;
-  }
+void CardReader::pauseSDPrint() {
+  if (sdprinting) sdprinting = false;
 }
 
-
-void CardReader::openLogFile(char* name)
-{
+void CardReader::openLogFile(char* name) {
   logging = true;
   openFile(name, false);
 }
 
-void CardReader::getAbsFilename(char *t)
-{
-  uint8_t cnt=0;
-  *t='/';t++;cnt++;
-  for(uint8_t i=0;i<workDirDepth;i++)
-  {
+void CardReader::getAbsFilename(char *t) {
+  uint8_t cnt = 0;
+  *t = '/'; t++; cnt++;
+  for (uint8_t i = 0; i < workDirDepth; i++) {
     workDirParents[i].getFilename(t); //SDBaseFile.getfilename!
-    while(*t!=0 && cnt< MAXPATHNAMELENGTH) 
-    {t++;cnt++;}  //crawl counter forward.
+    while(*t && cnt < MAXPATHNAMELENGTH) { t++; cnt++; } //crawl counter forward.
   }
-  if(cnt<MAXPATHNAMELENGTH-FILENAME_LENGTH)
+  if (cnt < MAXPATHNAMELENGTH - FILENAME_LENGTH)
     file.getFilename(t);
   else
-    t[0]=0;
+    t[0] = 0;
 }
 
-void CardReader::openFile(char* name,bool read, bool replace_current/*=true*/)
-{
-  if(!cardOK)
-    return;
-  if(file.isOpen())  //replacing current file by new file, or subfile call
-  {
-    if(!replace_current)
-    {
-     if((int)file_subcall_ctr>(int)SD_PROCEDURE_DEPTH-1)
-     {
+void CardReader::openFile(char* name, bool read, bool replace_current/*=true*/) {
+  if (!cardOK) return;
+  if (file.isOpen()) { //replacing current file by new file, or subfile call
+    if (!replace_current) {
+     if (file_subcall_ctr > SD_PROCEDURE_DEPTH - 1) {
        SERIAL_ERROR_START;
        SERIAL_ERRORPGM("trying to call sub-gcode files with too many levels. MAX level is:");
        SERIAL_ERRORLN(SD_PROCEDURE_DEPTH);
        kill();
        return;
      }
-     
+
      SERIAL_ECHO_START;
      SERIAL_ECHOPGM("SUBROUTINE CALL target:\"");
      SERIAL_ECHO(name);
      SERIAL_ECHOPGM("\" parent:\"");
-     
+
      //store current filename and position
      getAbsFilename(filenames[file_subcall_ctr]);
-     
+
      SERIAL_ECHO(filenames[file_subcall_ctr]);
      SERIAL_ECHOPGM("\" pos");
      SERIAL_ECHOLN(sdpos);
-     filespos[file_subcall_ctr]=sdpos;
+     filespos[file_subcall_ctr] = sdpos;
      file_subcall_ctr++;
     }
-    else
-    {
+    else {
      SERIAL_ECHO_START;
      SERIAL_ECHOPGM("Now doing file: ");
      SERIAL_ECHOLN(name);
     }
     file.close();
   }
-  else //opening fresh file
-  {
-    file_subcall_ctr=0; //resetting procedure depth in case user cancels print while in procedure
+  else { //opening fresh file
+    file_subcall_ctr = 0; //resetting procedure depth in case user cancels print while in procedure
     SERIAL_ECHO_START;
     SERIAL_ECHOPGM("Now fresh file: ");
     SERIAL_ECHOLN(name);
   }
   sdprinting = false;
-  
- 
+
   SdFile myDir;
-  curDir=&root;
-  char *fname=name;
-  
-  char *dirname_start,*dirname_end;
-  if(name[0]=='/')
-  {
-    dirname_start=strchr(name,'/')+1;
-    while(dirname_start>0)
-    {
-      dirname_end=strchr(dirname_start,'/');
-      //SERIAL_ECHO("start:");SERIAL_ECHOLN((int)(dirname_start-name));
-      //SERIAL_ECHO("end  :");SERIAL_ECHOLN((int)(dirname_end-name));
-      if(dirname_end>0 && dirname_end>dirname_start)
-      {
+  curDir = &root;
+  char *fname = name;
+
+  char *dirname_start, *dirname_end;
+  if (name[0] == '/') {
+    dirname_start = &name[1];
+    while(dirname_start > 0) {
+      dirname_end = strchr(dirname_start, '/');
+      //SERIAL_ECHO("start:");SERIAL_ECHOLN((int)(dirname_start - name));
+      //SERIAL_ECHO("end  :");SERIAL_ECHOLN((int)(dirname_end - name));
+      if (dirname_end > 0 && dirname_end > dirname_start) {
         char subdirname[FILENAME_LENGTH];
-        strncpy(subdirname, dirname_start, dirname_end-dirname_start);
-        subdirname[dirname_end-dirname_start]=0;
+        strncpy(subdirname, dirname_start, dirname_end - dirname_start);
+        subdirname[dirname_end - dirname_start] = 0;
         SERIAL_ECHOLN(subdirname);
-        if(!myDir.open(curDir,subdirname,O_READ))
-        {
+        if (!myDir.open(curDir, subdirname, O_READ)) {
           SERIAL_PROTOCOLPGM(MSG_SD_OPEN_FILE_FAIL);
           SERIAL_PROTOCOL(subdirname);
           SERIAL_PROTOCOLLNPGM(".");
           return;
         }
-        else
-        {
+        else {
           //SERIAL_ECHOLN("dive ok");
         }
-          
-        curDir=&myDir; 
-        dirname_start=dirname_end+1;
+
+        curDir = &myDir;
+        dirname_start = dirname_end + 1;
       }
-      else // the reminder after all /fsa/fdsa/ is the filename
-      {
-        fname=dirname_start;
-        //SERIAL_ECHOLN("remaider");
+      else { // the remainder after all /fsa/fdsa/ is the filename
+        fname = dirname_start;
+        //SERIAL_ECHOLN("remainder");
         //SERIAL_ECHOLN(fname);
         break;
       }
-      
     }
   }
-  else //relative path
-  {
-    curDir=&workDir;
+  else { //relative path
+    curDir = &workDir;
   }
-  if(read)
-  {
-    if (file.open(curDir, fname, O_READ)) 
-    {
+
+  if (read) {
+    if (file.open(curDir, fname, O_READ)) {
       filesize = file.fileSize();
       SERIAL_PROTOCOLPGM(MSG_SD_FILE_OPENED);
       SERIAL_PROTOCOL(fname);
       SERIAL_PROTOCOLPGM(MSG_SD_SIZE);
       SERIAL_PROTOCOLLN(filesize);
       sdpos = 0;
-      
+
       SERIAL_PROTOCOLLNPGM(MSG_SD_FILE_SELECTED);
       getfilename(0, fname);
       lcd_setstatus(longFilename[0] ? longFilename : fname);
     }
-    else
-    {
+    else {
       SERIAL_PROTOCOLPGM(MSG_SD_OPEN_FILE_FAIL);
       SERIAL_PROTOCOL(fname);
       SERIAL_PROTOCOLLNPGM(".");
     }
   }
-  else 
-  { //write
-    if (!file.open(curDir, fname, O_CREAT | O_APPEND | O_WRITE | O_TRUNC))
-    {
+  else { //write
+    if (!file.open(curDir, fname, O_CREAT | O_APPEND | O_WRITE | O_TRUNC)) {
       SERIAL_PROTOCOLPGM(MSG_SD_OPEN_FILE_FAIL);
       SERIAL_PROTOCOL(fname);
       SERIAL_PROTOCOLLNPGM(".");
     }
-    else
-    {
+    else {
       saving = true;
       SERIAL_PROTOCOLPGM(MSG_SD_WRITE_TO_FILE);
       SERIAL_PROTOCOLLN(name);
       lcd_setstatus(fname);
     }
   }
-  
 }
 
-void CardReader::removeFile(char* name)
-{
-  if(!cardOK)
-    return;
+void CardReader::removeFile(char* name) {
+  if (!cardOK) return;
+
   file.close();
   sdprinting = false;
-  
-  
+
   SdFile myDir;
-  curDir=&root;
-  char *fname=name;
-  
-  char *dirname_start,*dirname_end;
-  if(name[0]=='/')
-  {
-    dirname_start=strchr(name,'/')+1;
-    while(dirname_start>0)
-    {
-      dirname_end=strchr(dirname_start,'/');
-      //SERIAL_ECHO("start:");SERIAL_ECHOLN((int)(dirname_start-name));
-      //SERIAL_ECHO("end  :");SERIAL_ECHOLN((int)(dirname_end-name));
-      if(dirname_end>0 && dirname_end>dirname_start)
-      {
+  curDir = &root;
+  char *fname = name;
+
+  char *dirname_start, *dirname_end;
+  if (name[0] == '/') {
+    dirname_start = strchr(name, '/') + 1;
+    while (dirname_start > 0) {
+      dirname_end = strchr(dirname_start, '/');
+      //SERIAL_ECHO("start:");SERIAL_ECHOLN((int)(dirname_start - name));
+      //SERIAL_ECHO("end  :");SERIAL_ECHOLN((int)(dirname_end - name));
+      if (dirname_end > 0 && dirname_end > dirname_start) {
         char subdirname[FILENAME_LENGTH];
-        strncpy(subdirname, dirname_start, dirname_end-dirname_start);
-        subdirname[dirname_end-dirname_start]=0;
+        strncpy(subdirname, dirname_start, dirname_end - dirname_start);
+        subdirname[dirname_end - dirname_start] = 0;
         SERIAL_ECHOLN(subdirname);
-        if(!myDir.open(curDir,subdirname,O_READ))
-        {
+        if (!myDir.open(curDir, subdirname, O_READ)) {
           SERIAL_PROTOCOLPGM("open failed, File: ");
           SERIAL_PROTOCOL(subdirname);
           SERIAL_PROTOCOLLNPGM(".");
           return;
         }
-        else
-        {
+        else {
           //SERIAL_ECHOLN("dive ok");
         }
-          
-        curDir=&myDir; 
-        dirname_start=dirname_end+1;
+
+        curDir = &myDir;
+        dirname_start = dirname_end + 1;
       }
-      else // the reminder after all /fsa/fdsa/ is the filename
-      {
-        fname=dirname_start;
-        //SERIAL_ECHOLN("remaider");
+      else { // the remainder after all /fsa/fdsa/ is the filename
+        fname = dirname_start;
+        //SERIAL_ECHOLN("remainder");
         //SERIAL_ECHOLN(fname);
         break;
       }
-      
     }
   }
-  else //relative path
-  {
-    curDir=&workDir;
+  else { // relative path
+    curDir = &workDir;
+  }
+
+  if (file.remove(curDir, fname)) {
+    SERIAL_PROTOCOLPGM("File deleted:");
+    SERIAL_PROTOCOLLN(fname);
+    sdpos = 0;
+  }
+  else {
+    SERIAL_PROTOCOLPGM("Deletion failed, File: ");
+    SERIAL_PROTOCOL(fname);
+    SERIAL_PROTOCOLLNPGM(".");
   }
-    if (file.remove(curDir, fname)) 
-    {
-      SERIAL_PROTOCOLPGM("File deleted:");
-      SERIAL_PROTOCOLLN(fname);
-      sdpos = 0;
-    }
-    else
-    {
-      SERIAL_PROTOCOLPGM("Deletion failed, File: ");
-      SERIAL_PROTOCOL(fname);
-      SERIAL_PROTOCOLLNPGM(".");
-    }
-  
 }
 
-void CardReader::getStatus()
-{
-  if(cardOK){
+void CardReader::getStatus() {
+  if (cardOK) {
     SERIAL_PROTOCOLPGM(MSG_SD_PRINTING_BYTE);
     SERIAL_PROTOCOL(sdpos);
     SERIAL_PROTOCOLPGM("/");
     SERIAL_PROTOCOLLN(filesize);
   }
-  else{
+  else {
     SERIAL_PROTOCOLLNPGM(MSG_SD_NOT_PRINTING);
   }
 }
-void CardReader::write_command(char *buf)
-{
+
+void CardReader::write_command(char *buf) {
   char* begin = buf;
   char* npos = 0;
   char* end = buf + strlen(buf) - 1;
 
   file.writeError = false;
-  if((npos = strchr(buf, 'N')) != NULL)
-  {
+  if ((npos = strchr(buf, 'N')) != NULL) {
     begin = strchr(npos, ' ') + 1;
     end = strchr(npos, '*') - 1;
   }
@@ -484,162 +391,129 @@ void CardReader::write_command(char *buf)
   end[2] = '\n';
   end[3] = '\0';
   file.write(begin);
-  if (file.writeError)
-  {
+  if (file.writeError) {
     SERIAL_ERROR_START;
     SERIAL_ERRORLNPGM(MSG_SD_ERR_WRITE_TO_FILE);
   }
 }
 
+void CardReader::checkautostart(bool force) {
+  if (!force && (!autostart_stilltocheck || autostart_atmillis < millis()))
+    return;
 
-void CardReader::checkautostart(bool force)
-{
-  if(!force)
-  {
-    if(!autostart_stilltocheck)
-      return;
-    if(autostart_atmillis<millis())
-      return;
-  }
-  autostart_stilltocheck=false;
-  if(!cardOK)
-  {
+  autostart_stilltocheck = false;
+
+  if (!cardOK) {
     initsd();
-    if(!cardOK) //fail
-      return;
+    if (!cardOK) return; // fail
   }
-  
+
   char autoname[30];
   sprintf_P(autoname, PSTR("auto%i.g"), autostart_index);
-  for(int8_t i=0;i<(int8_t)strlen(autoname);i++)
-    autoname[i]=tolower(autoname[i]);
+  for (int8_t i = 0; i < (int8_t)strlen(autoname); i++) autoname[i] = tolower(autoname[i]);
+
   dir_t p;
 
   root.rewind();
-  
-  bool found=false;
-  while (root.readDir(p, NULL) > 0) 
-  {
-    for(int8_t i=0;i<(int8_t)strlen((char*)p.name);i++)
-    p.name[i]=tolower(p.name[i]);
-    //Serial.print((char*)p.name);
-    //Serial.print(" ");
-    //Serial.println(autoname);
-    if(p.name[9]!='~') //skip safety copies
-    if(strncmp((char*)p.name,autoname,5)==0)
-    {
-      char cmd[30];
 
+  bool found = false;
+  while (root.readDir(p, NULL) > 0) {
+    for (int8_t i = 0; i < (int8_t)strlen((char*)p.name); i++) p.name[i] = tolower(p.name[i]);
+    if (p.name[9] != '~' && strncmp((char*)p.name, autoname, 5) == 0) {
+      char cmd[30];
       sprintf_P(cmd, PSTR("M23 %s"), autoname);
       enquecommand(cmd);
       enquecommands_P(PSTR("M24"));
-      found=true;
+      found = true;
     }
   }
-  if(!found)
-    autostart_index=-1;
+  if (!found)
+    autostart_index = -1;
   else
     autostart_index++;
 }
 
-void CardReader::closefile(bool store_location)
-{
+void CardReader::closefile(bool store_location) {
   file.sync();
   file.close();
-  saving = false; 
-  logging = false;
-  
-  if(store_location)
-  {
+  saving = logging = false;
+
+  if (store_location) {
     //future: store printer state, filename and position for continuing a stopped print
     // so one can unplug the printer and continue printing the next day.
-    
   }
-
-  
 }
 
-void CardReader::getfilename(uint16_t nr, const char * const match/*=NULL*/)
-{
-  curDir=&workDir;
-  lsAction=LS_GetFilename;
-  nrFiles=nr;
+/**
+ * Get the name of a file in the current directory by index
+ */
+void CardReader::getfilename(uint16_t nr, const char * const match/*=NULL*/) {
+  curDir = &workDir;
+  lsAction = LS_GetFilename;
+  nrFiles = nr;
   curDir->rewind();
-  lsDive("",*curDir,match);
-  
+  lsDive("", *curDir, match);
 }
 
-uint16_t CardReader::getnrfilenames()
-{
-  curDir=&workDir;
-  lsAction=LS_Count;
-  nrFiles=0;
+uint16_t CardReader::getnrfilenames() {
+  curDir = &workDir;
+  lsAction = LS_Count;
+  nrFiles = 0;
   curDir->rewind();
-  lsDive("",*curDir);
+  lsDive("", *curDir);
   //SERIAL_ECHOLN(nrFiles);
   return nrFiles;
 }
 
-void CardReader::chdir(const char * relpath)
-{
+void CardReader::chdir(const char * relpath) {
   SdFile newfile;
-  SdFile *parent=&root;
-  
-  if(workDir.isOpen())
-    parent=&workDir;
-  
-  if(!newfile.open(*parent,relpath, O_READ))
-  {
-   SERIAL_ECHO_START;
-   SERIAL_ECHOPGM(MSG_SD_CANT_ENTER_SUBDIR);
-   SERIAL_ECHOLN(relpath);
+  SdFile *parent = &root;
+
+  if (workDir.isOpen()) parent = &workDir;
+
+  if (!newfile.open(*parent, relpath, O_READ)) {
+    SERIAL_ECHO_START;
+    SERIAL_ECHOPGM(MSG_SD_CANT_ENTER_SUBDIR);
+    SERIAL_ECHOLN(relpath);
   }
-  else
-  {
+  else {
     if (workDirDepth < MAX_DIR_DEPTH) {
-      for (int d = ++workDirDepth; d--;)
-        workDirParents[d+1] = workDirParents[d];
-      workDirParents[0]=*parent;
+      ++workDirDepth;
+      for (int d = workDirDepth; d--;) workDirParents[d + 1] = workDirParents[d];
+      workDirParents[0] = *parent;
     }
-    workDir=newfile;
+    workDir = newfile;
   }
 }
 
-void CardReader::updir()
-{
-  if(workDirDepth > 0)
-  {
+void CardReader::updir() {
+  if (workDirDepth > 0) {
     --workDirDepth;
     workDir = workDirParents[0];
-    int d;
     for (int d = 0; d < workDirDepth; d++)
       workDirParents[d] = workDirParents[d+1];
   }
 }
 
-
-void CardReader::printingHasFinished()
-{
-    st_synchronize();
-    if(file_subcall_ctr>0) //heading up to a parent file that called current as a procedure.
-    {
-      file.close();
-      file_subcall_ctr--;
-      openFile(filenames[file_subcall_ctr],true,true);
-      setIndex(filespos[file_subcall_ctr]);
-      startFileprint();
-    }
-    else
-    {
-      quickStop();
-      file.close();
-      sdprinting = false;
-      if(SD_FINISHED_STEPPERRELEASE)
-      {
-          //finishAndDisableSteppers();
-          enquecommands_P(PSTR(SD_FINISHED_RELEASECOMMAND));
-      }
-      autotempShutdown();
+void CardReader::printingHasFinished() {
+  st_synchronize();
+  if (file_subcall_ctr > 0) { // Heading up to a parent file that called current as a procedure.
+    file.close();
+    file_subcall_ctr--;
+    openFile(filenames[file_subcall_ctr], true, true);
+    setIndex(filespos[file_subcall_ctr]);
+    startFileprint();
+  }
+  else {
+    quickStop();
+    file.close();
+    sdprinting = false;
+    if (SD_FINISHED_STEPPERRELEASE) {
+      //finishAndDisableSteppers();
+      enquecommands_P(PSTR(SD_FINISHED_RELEASECOMMAND));
     }
+    autotempShutdown();
+  }
 }
+
 #endif //SDSUPPORT
diff --git a/Marlin/cardreader.h b/Marlin/cardreader.h
index a1da3d64a..b55d09a65 100644
--- a/Marlin/cardreader.h
+++ b/Marlin/cardreader.h
@@ -3,21 +3,21 @@
 
 #ifdef SDSUPPORT
 
-#define MAX_DIR_DEPTH 10
+#define MAX_DIR_DEPTH 10          // Maximum folder depth
 
 #include "SdFile.h"
-enum LsAction {LS_SerialPrint,LS_Count,LS_GetFilename};
-class CardReader
-{
+enum LsAction { LS_SerialPrint, LS_Count, LS_GetFilename };
+
+class CardReader {
 public:
   CardReader();
-  
+
   void initsd();
   void write_command(char *buf);
   //files auto[0-9].g on the sd card are performed in a row
   //this is to delay autostart and hence the initialisaiton of the sd card to some seconds after the normal init, so the device is available quick after a reset
 
-  void checkautostart(bool x); 
+  void checkautostart(bool x);
   void openFile(char* name,bool read,bool replace_current=true);
   void openLogFile(char* name);
   void removeFile(char* name);
@@ -30,9 +30,8 @@ public:
 
   void getfilename(uint16_t nr, const char* const match=NULL);
   uint16_t getnrfilenames();
-  
+
   void getAbsFilename(char *t);
-  
 
   void ls();
   void chdir(const char * relpath);
@@ -41,56 +40,52 @@ public:
 
 
   FORCE_INLINE bool isFileOpen() { return file.isOpen(); }
-  FORCE_INLINE bool eof() { return sdpos>=filesize ;};
-  FORCE_INLINE int16_t get() {  sdpos = file.curPosition();return (int16_t)file.read();};
-  FORCE_INLINE void setIndex(long index) {sdpos = index;file.seekSet(index);};
-  FORCE_INLINE uint8_t percentDone(){if(!isFileOpen()) return 0; if(filesize) return sdpos/((filesize+99)/100); else return 0;};
-  FORCE_INLINE char* getWorkDirName(){workDir.getFilename(filename);return filename;};
+  FORCE_INLINE bool eof() { return sdpos >= filesize; }
+  FORCE_INLINE int16_t get() { sdpos = file.curPosition(); return (int16_t)file.read(); }
+  FORCE_INLINE void setIndex(long index) { sdpos = index; file.seekSet(index); }
+  FORCE_INLINE uint8_t percentDone() { return (isFileOpen() && filesize) ? sdpos / ((filesize + 99) / 100) : 0; }
+  FORCE_INLINE char* getWorkDirName() { workDir.getFilename(filename); return filename; }
 
 public:
-  bool saving;
-  bool logging;
-  bool sdprinting;  
-  bool cardOK;
-  char filename[FILENAME_LENGTH];
-  char longFilename[LONG_FILENAME_LENGTH];
-  bool filenameIsDir;
+  bool saving, logging, sdprinting, cardOK, filenameIsDir;
+  char filename[FILENAME_LENGTH], longFilename[LONG_FILENAME_LENGTH];
   int autostart_index;
 private:
-  SdFile root,*curDir,workDir,workDirParents[MAX_DIR_DEPTH];
+  SdFile root, *curDir, workDir, workDirParents[MAX_DIR_DEPTH];
   uint16_t workDirDepth;
   Sd2Card card;
   SdVolume volume;
   SdFile file;
   #define SD_PROCEDURE_DEPTH 1
-  #define MAXPATHNAMELENGTH (FILENAME_LENGTH*MAX_DIR_DEPTH+MAX_DIR_DEPTH+1)
+  #define MAXPATHNAMELENGTH (FILENAME_LENGTH*MAX_DIR_DEPTH + MAX_DIR_DEPTH + 1)
   uint8_t file_subcall_ctr;
   uint32_t filespos[SD_PROCEDURE_DEPTH];
   char filenames[SD_PROCEDURE_DEPTH][MAXPATHNAMELENGTH];
   uint32_t filesize;
-  //int16_t n;
   unsigned long autostart_atmillis;
-  uint32_t sdpos ;
+  uint32_t sdpos;
 
   bool autostart_stilltocheck; //the sd start is delayed, because otherwise the serial cannot answer fast enought to make contact with the hostsoftware.
-  
+
   LsAction lsAction; //stored for recursion.
-  int16_t nrFiles; //counter for the files in the current directory and recycled as position counter for getting the nrFiles'th name in the directory.
+  uint16_t nrFiles; //counter for the files in the current directory and recycled as position counter for getting the nrFiles'th name in the directory.
   char* diveDirName;
   void lsDive(const char *prepend, SdFile parent, const char * const match=NULL);
 };
+
 extern CardReader card;
+
 #define IS_SD_PRINTING (card.sdprinting)
 
 #if (SDCARDDETECT > -1)
-# ifdef SDCARDDETECTINVERTED 
-#  define IS_SD_INSERTED (READ(SDCARDDETECT)!=0)
-# else
-#  define IS_SD_INSERTED (READ(SDCARDDETECT)==0)
-# endif //SDCARDTETECTINVERTED
+  #ifdef SDCARDDETECTINVERTED
+    #define IS_SD_INSERTED (READ(SDCARDDETECT) != 0)
+  #else
+    #define IS_SD_INSERTED (READ(SDCARDDETECT) == 0)
+  #endif
 #else
-//If we don't have a card detect line, aways asume the card is inserted
-# define IS_SD_INSERTED true
+  //No card detect line? Assume the card is inserted.
+  #define IS_SD_INSERTED true
 #endif
 
 #else
@@ -98,4 +93,5 @@ extern CardReader card;
 #define IS_SD_PRINTING (false)
 
 #endif //SDSUPPORT
-#endif
+
+#endif //__CARDREADER_H
diff --git a/Marlin/digipot_mcp4451.cpp b/Marlin/digipot_mcp4451.cpp
index 0ced287aa..22d270025 100644
--- a/Marlin/digipot_mcp4451.cpp
+++ b/Marlin/digipot_mcp4451.cpp
@@ -1,59 +1,58 @@
 #include "Configuration.h"
 
 #ifdef DIGIPOT_I2C
+
 #include "Stream.h"
 #include "utility/twi.h"
 #include "Wire.h"
 
 // Settings for the I2C based DIGIPOT (MCP4451) on Azteeg X3 Pro
 #if MB(5DPRINT)
-#define DIGIPOT_I2C_FACTOR 117.96
-#define DIGIPOT_I2C_MAX_CURRENT 1.736
+  #define DIGIPOT_I2C_FACTOR 117.96
+  #define DIGIPOT_I2C_MAX_CURRENT 1.736
 #else
-#define DIGIPOT_I2C_FACTOR 106.7
-#define DIGIPOT_I2C_MAX_CURRENT 2.5
+  #define DIGIPOT_I2C_FACTOR 106.7
+  #define DIGIPOT_I2C_MAX_CURRENT 2.5
 #endif
 
-static byte current_to_wiper( float current ){
-    return byte(ceil(float((DIGIPOT_I2C_FACTOR*current))));
+static byte current_to_wiper(float current) {
+  return byte(ceil(float((DIGIPOT_I2C_FACTOR*current))));
 }
 
-static void i2c_send(byte addr, byte a, byte b)
-{
-	Wire.beginTransmission(addr);
-    Wire.write(a);
-    Wire.write(b);
-    Wire.endTransmission();
+static void i2c_send(byte addr, byte a, byte b) {
+  Wire.beginTransmission(addr);
+  Wire.write(a);
+  Wire.write(b);
+  Wire.endTransmission();
 }
 
 // This is for the MCP4451 I2C based digipot
-void digipot_i2c_set_current( int channel, float current )
-{
-    current = min( (float) max( current, 0.0f ), DIGIPOT_I2C_MAX_CURRENT);
-    // these addresses are specific to Azteeg X3 Pro, can be set to others,
-    // In this case first digipot is at address A0=0, A1= 0, second one is at A0=0, A1= 1
-    byte addr= 0x2C; // channel 0-3
-    if(channel >= 4) {
-    	addr= 0x2E; // channel 4-7
-    	channel-= 4;
-    }
-
-    // Initial setup
-    i2c_send( addr, 0x40, 0xff );
-    i2c_send( addr, 0xA0, 0xff );
-
-    // Set actual wiper value
-    byte addresses[4] = { 0x00, 0x10, 0x60, 0x70 };
-    i2c_send( addr, addresses[channel], current_to_wiper(current) );
+void digipot_i2c_set_current(int channel, float current) {
+  current = min( (float) max( current, 0.0f ), DIGIPOT_I2C_MAX_CURRENT);
+  // these addresses are specific to Azteeg X3 Pro, can be set to others,
+  // In this case first digipot is at address A0=0, A1= 0, second one is at A0=0, A1= 1
+  byte addr = 0x2C; // channel 0-3
+  if (channel >= 4) {
+  	addr = 0x2E; // channel 4-7
+  	channel -= 4;
+  }
+
+  // Initial setup
+  i2c_send(addr, 0x40, 0xff);
+  i2c_send(addr, 0xA0, 0xff);
+
+  // Set actual wiper value
+  byte addresses[4] = { 0x00, 0x10, 0x60, 0x70 };
+  i2c_send(addr, addresses[channel], current_to_wiper(current));
 }
 
-void digipot_i2c_init()
-{
-    const float digipot_motor_current[] = DIGIPOT_I2C_MOTOR_CURRENTS;
-    Wire.begin();
-    // setup initial currents as defined in Configuration_adv.h
-    for(int i=0;i<=sizeof(digipot_motor_current)/sizeof(float);i++) {
-        digipot_i2c_set_current(i, digipot_motor_current[i]);
-    }
+void digipot_i2c_init() {
+  const float digipot_motor_current[] = DIGIPOT_I2C_MOTOR_CURRENTS;
+  Wire.begin();
+  // setup initial currents as defined in Configuration_adv.h
+  for(int i = 0; i <= sizeof(digipot_motor_current) / sizeof(float); i++) {
+    digipot_i2c_set_current(i, digipot_motor_current[i]);
+  }
 }
-#endif
+
+#endif //DIGIPOT_I2C