diff --git a/backendC/CleanCompilerSources/checker.h b/backendC/CleanCompilerSources/checker.h
index f93e208e4f71f0bebe70c262ac7e0093fdce9b2d..778f3bed875f7e1642d3ddf38dcb9b296aa4a500 100644
--- a/backendC/CleanCompilerSources/checker.h
+++ b/backendC/CleanCompilerSources/checker.h
@@ -12,7 +12,6 @@ extern SymbDef scc_dependency_list;
 
 SymbDef MakeNewSymbolDefinition (char *module, char *name, int arity, SDefKind kind);
 char *ConvertSymbolToString (Symbol symb);
-void ReadInlineCode (void);
 void InitChecker (void);
 void GenDependencyList (void);
 NodeDefs NewNodeDef (NodeId nid, Node node);
diff --git a/backendC/CleanCompilerSources/instructions.c b/backendC/CleanCompilerSources/instructions.c
index 0913d2de0e76276a4f83a9408c1eb730b7ac11a2..52c82c314f443a098034404c76b7528d6512e62c 100644
--- a/backendC/CleanCompilerSources/instructions.c
+++ b/backendC/CleanCompilerSources/instructions.c
@@ -103,7 +103,7 @@ char *ABCFileName;
 
 Bool OpenABCFile (char *fname)
 {
-	OutFile = FOpen (fname, abcFile, "w");
+	OutFile = FOpen (fname, "w");
 
 	if (OutFile!=NULL){
 #if defined (POWER)
@@ -131,7 +131,7 @@ void CloseABCFile (char *fname)
 			StaticMessage (True, "<open file>", "Write error (disk full?)");
 		}
 		if (CompilerError)
-			FDelete (fname, abcFile); 
+			FDelete (fname);
 		OpenedFile = (File) NIL;
 	}
 }
diff --git a/backendC/CleanCompilerSources/system.h b/backendC/CleanCompilerSources/system.h
index bccc7d36dab30f7e2ca50458d54d4d98bfe9e8d9..afc023ec53ed9aebe4c4fe37c509a53135dea7cf 100644
--- a/backendC/CleanCompilerSources/system.h
+++ b/backendC/CleanCompilerSources/system.h
@@ -44,9 +44,8 @@
 
 extern char *PATHLIST;
 
-extern char *GetFileExtension (FileKind kind);
-extern File FOpen (char *wname, FileKind kind, char *mode);
-extern int FDelete (char *fname, FileKind kind);
+extern File FOpen (char *fname, char *mode);
+extern int FDelete (char *fname);
 extern int FClose (File f);
 
 extern int FPutS (char *s, File f);
@@ -56,10 +55,6 @@ extern int FPrintF (File f, char *fmt,...);
 extern int FPrintF (); /* (File w, char *fmt,...) */
 #endif
 
-#ifndef __ppc__
-extern char *FGetS (char *s, int n, File f);
-#endif
-
 #ifdef _VARARGS_
 	extern void DoError (char *fmt,...);
 	extern void DoFatalError (char *fmt,...);
diff --git a/backendC/CleanCompilerSources/windows_io.c b/backendC/CleanCompilerSources/windows_io.c
index 1d661e5e67d769412261dbe6e5bf930c79066cd5..edf915c2d1a7b0c3ae54211f8103ff7fe8e8543e 100644
--- a/backendC/CleanCompilerSources/windows_io.c
+++ b/backendC/CleanCompilerSources/windows_io.c
@@ -20,261 +20,19 @@
 # include <winbase.h>
 #endif
 
-char *GetFileExtension (FileKind kind)
+File FOpen (char *fname,char *mode)
 {
-	switch (kind){
-		case abcFile:
-			return ".abc";
-		case obj00File:
-		case obj20File:
-		case obj81File:
-			return ".obj";
-		case iclFile:
-			return ".icl";
-		case dclFile:
-			return ".dcl";
-		case hsFile:
-			return ".hs";
-		case assFile:
-			return ".a";
-		case sunAssFile:
-			return ".s";
-		case applFile:
-		case otherFile:
-		default:
-			return "";
-	}	
-}
-
-char clean_lib_directory[129] = ".";
-
-static int file_exists (char *file_name)
-{
-	HANDLE h;
-	WIN32_FIND_DATA find_data;
-	
-	h=FindFirstFile (file_name,&find_data);
-
-	if (h!=INVALID_HANDLE_VALUE){
-		FindClose (h);
-		return True;
-	} else
-		return False;
-}
-
-static int use_clean_system_files_folder=1;
-
-extern char *path_parameter;
-
-static void append_file_name_and_ext (char *path_p,char *fname_p,char *ext,int in_clean_system_files_folder)
-{
-	int i;
-	char c;
-	
-	if (in_clean_system_files_folder){
-		int last_dot_i;
-
-		last_dot_i = -1;
-
-		i=0;
-		while (c=fname_p[i], c!='\0'){
-			if (c=='.')
-				last_dot_i=i;
-			++i;
-		}
-
-		if (last_dot_i>=0){
-			i=0;
-			while (i<last_dot_i){
-				path_p[i]=fname_p[i];
-				++i;
-			}
-			path_p[i]='\\';
-			
-			path_p+=last_dot_i+1;
-			fname_p+=last_dot_i+1;
-		}
-		
-
-		strcpy (path_p,"Clean System Files\\");
-		path_p += 19;
-
-		i=0;
-		while (c=fname_p[i], c!='\0'){
-			path_p[i] = c;
-			++i;
-		}
-		path_p+=i;
-	} else {
-		int i;
-		char c;
-
-		i=0;
-		while (c=fname_p[i], c!='\0'){
-			path_p[i] = c=='.' ? '\\' : c;
-			++i;
-		}
-		path_p+=i;
+	return fopen (fname,mode);
 	}
 
-	i=0;
-	do {
-		c=ext[i];
-		path_p[i]=c;
-		++i;
-	} while (c!='\0');
-}
-
-static Bool findfilepath (char *fname,FileKind kind,char *path)
-{
-    char *s,*path_elem,c,*pathlist,*ext;
-	int in_clean_system_files_folder;
-
-	pathlist=path_parameter;
-    if (pathlist==NULL)
-		pathlist=".";
-
-	ext = GetFileExtension (kind);
-
-	in_clean_system_files_folder=0;
-
-	if (use_clean_system_files_folder)
-		switch (kind){
-			case abcFile:
-			case obj00File:
-			case obj20File:
-			case obj81File:
-				in_clean_system_files_folder=1;
-		}
-
-
-	if (! (fname[0]=='\\' || (fname[0]!=0 && fname[1]==':'))){
-		path_elem = pathlist;
-
-		s=path_elem;		
-		for (;;){
-			c = *s;
-			if (c == ';' || c == '\0'){
-				char *from_p,*dest_p;
-			
-				from_p=path_elem;
-				dest_p=path;
-				while (from_p<s)
-					*dest_p++ = *from_p++;
-				*dest_p = '\0';
-
-				*dest_p++ = '\\';
-				append_file_name_and_ext (dest_p,fname,ext,in_clean_system_files_folder);
-				if (file_exists (path))
-					return True;
-		    
-			    if (c == '\0')
-			    	break;
-	
-				path_elem = ++s;
-			} else
-			    ++s;
-		}
-	}
-
-	append_file_name_and_ext (path,fname,ext,in_clean_system_files_folder);
-
- 	return file_exists (path);
-}
-
-static char *skip_after_last_dot (char *s)
-{
-	int i,after_last_dot_i;
-	char c;
-
-	after_last_dot_i=0;
-
-	i=0;
-	while (c=s[i],c!='\0'){
-		++i;
-		if (c=='.')
-			after_last_dot_i=i;
-	}
-	
-	return &s[after_last_dot_i];
-}
-
-File FOpen (char *fname,FileKind kind,char *mode)
-{
-	char path[MAXPATHLEN];
-	Bool res;
-
-	if (fname[0]=='\\' || (fname[0]!=0 && fname[1]==':')){
-		strcpy (path,fname);
-		strcat (path,GetFileExtension (kind));
-		return fopen (path,mode);
-	}
-
-	if (mode[0]=='r'){
-		findfilepath (fname,kind,path);
-		return fopen (path,mode);
-	} else {
-		res=findfilepath (fname,dclFile,path);
-		if (!res)
-			res=findfilepath (fname,iclFile,path);
-		if (!res)
-			res=findfilepath (fname,hsFile,path);
-
-		if (res){
-			char *p,*after_last_slash;
-
-			after_last_slash=NULL;
-
-			p=path;
-			while (*p)
-				if (*p++=='\\')
-					after_last_slash=p;
-
-			if (after_last_slash==NULL)
-				after_last_slash=path;
-
-			if (use_clean_system_files_folder){
-				strcpy (after_last_slash,"Clean System Files");
-
-				if (!file_exists (path)){
-					SECURITY_ATTRIBUTES sa;
-
-					sa.nLength = sizeof(SECURITY_ATTRIBUTES);
-					sa.bInheritHandle = TRUE;
-					sa.lpSecurityDescriptor = NULL;
-
-					CreateDirectory (path,&sa);
-				}
-
-				strcat (after_last_slash,"\\");
-				
-				strcat (after_last_slash,skip_after_last_dot (fname));
-			} else
-				strcpy (after_last_slash,skip_after_last_dot (fname));
-			strcat (after_last_slash,GetFileExtension (kind));
-			
-			return fopen (path,mode);
-		} else
-			return NULL;
-	}	
-}
-
 int FClose (File f)
 {
 	return fclose ((FILE *) f);
 }
 
-int FDelete (char *fname, FileKind kind)
+int FDelete (char *fname)
 {
-	char path[MAXPATHLEN];
-	Bool res;
-	
-	res = findfilepath (fname,kind,path);
-
-	if (res)
-		return remove (path);
-	else
-		return -1;
+	return remove (fname);
 }
 
 int FPrintF (File f, char *fmt, ...)
@@ -289,11 +47,6 @@ int FPrintF (File f, char *fmt, ...)
 	return n;
 }
 
-char *FGetS (char *s, int n, File f)
-{
-	return fgets (s, n, (FILE *) f);
-}
-
 int FPutS (char *s, File f)
 {
 	return fputs (s, (FILE *) f);
diff --git a/main/compile.icl b/main/compile.icl
index 88a49383120e591cdedc1b2f90f3b7b901437d81..bc9f0ac2add7fa8e6afa1758effe05737b0bfa50 100644
--- a/main/compile.icl
+++ b/main/compile.icl
@@ -94,6 +94,17 @@ closeTclFile (Yes tcl_file) files
 closeTclFile _ files
 	= (True,files);
 
+abc_file_name_in_clean_system_files_folder :: !String !String !*File !*Files -> (!Bool, !String, !*File, !*Files)
+abc_file_name_in_clean_system_files_folder mod_dir mod_name error files
+	// mod_dir ends with DirectorySeparator
+	# (csf_directory_path,file_name) = make_clean_system_files_dir_and_file_name (mod_dir +++ mod_name)
+	# file_path = csf_directory_path +++ {DirectorySeparator} +++ file_name +++ ".abc"
+	# (ok, files) = ensureCleanSystemFilesExists csf_directory_path files
+	| not ok
+		# error = fwrites ("can't create folder \"" +++ csf_directory_path +++"\"\n") error
+		= (False, file_path, error, files)
+	= (True, file_path, error, files)
+
 ::	CoclOptions =
 	{	moduleName:: {#Char}
 	,	pathName ::{#Char}
@@ -325,14 +336,16 @@ compileModule options backendArgs cache=:{dcl_modules,functions_and_macros,prede
 	  hp_type_heaps=heaps.hp_type_heaps
 	  type_var_heap=hp_type_heaps.th_vars
 	  attrHeap=hp_type_heaps.th_attrs
-	# (success,functions_and_macros,var_heap,type_var_heap,attrHeap,error,out)
+	# (success,functions_and_macros,var_heap,type_var_heap,attrHeap,error,out,files)
 		= case optionalSyntaxTree of
 			Yes syntaxTree
 				# functions_and_macros = syntaxTree.fe_icl.icl_functions
+				# (Yes path) = mbModPath
+				# (csf_dir_exists,abc_file_path,error,files) = abc_file_name_in_clean_system_files_folder path options.moduleName error files
 				# (success, var_heap, type_var_heap, attrHeap, error, out)
-				 	 = backEndInterface outputPath (map appendRedirection backendArgs) options.listTypes options.outPath predef_symbols syntaxTree main_dcl_module_n
+				 	 = backEndInterface abc_file_path (map appendRedirection backendArgs) options.listTypes options.outPath predef_symbols syntaxTree main_dcl_module_n
 				 	 					var_heap type_var_heap attrHeap error out
-				-> (success,functions_and_macros,var_heap,type_var_heap,attrHeap,error,out)
+				-> (success,functions_and_macros,var_heap,type_var_heap,attrHeap,error,out,files)
 				with
 					appendRedirection arg
 						= case arg of
@@ -343,17 +356,7 @@ compileModule options backendArgs cache=:{dcl_modules,functions_and_macros,prede
 							arg
 								->	arg
 			No
-				-> (False,{},var_heap,type_var_heap,attrHeap,error,out)
-		with
-/*
-			outputPath
-				=	if (options.outputPathName == "")
-						(directoryName options.pathName +++ "Clean System Files" +++ {DirectorySeparator} +++ baseName options.pathName)
-						options.outputPathName
-*/
-			outputPath
-	//				=	/* directoryName options.pathName +++ "Clean System Files" +++ {DirectorySeparator} +++ */ baseName options.pathName
-				=	baseName options.pathName
+				-> (False,{},var_heap,type_var_heap,attrHeap,error,out,files)
 	# heaps = {heaps & hp_var_heap=var_heap, hp_type_heaps = {th_vars=type_var_heap, th_attrs=attrHeap}}
 	# (closed, files) = fclose out files
 	| not closed