What is the "Everyone" Users group on German OS?

ea.Trustee.TrusteeType = TRUSTEE_IS_WELL_KNOWN_GROUP;
ea.Trustee.TrusteeForm = TRUSTEE_IS_SID;
ea.Trustee.ptstrName = TEXT("S-1-1-0");

// This code requires MinGW 3.4.5 or above for ConvertStringSidToSid()

#define WINVER 0x0502 // To make <sddl.h> define ConvertStringSidToSid

#include <windows.h>
#include <aclapi.h>
#include <sddl.h>

bool GiveDirectoryFullAccessToGroup(LPCTSTR lpPath, LPTSTR lpGroup);

extern "C" bool GiveDirectoryFullAccess(LPCTSTR lpPath)
{
	if(!GiveDirectoryFullAccessToGroup(lpPath, "S-1-5-32-545")) return false; // Users
	if(!GiveDirectoryFullAccessToGroup(lpPath, "S-1-1-0")) return false; // Everyone

	return true;
}

bool GiveDirectoryFullAccessToGroup(LPCTSTR lpPath, LPTSTR lpGroup)
{
	HANDLE hDir = CreateFile(lpPath,READ_CONTROL|WRITE_DAC,0,NULL,OPEN_EXISTING,FILE_FLAG_BACKUP_SEMANTICS,NULL);
	if(hDir == INVALID_HANDLE_VALUE) return false;

	ACL* pOldDACL=NULL;
	SECURITY_DESCRIPTOR* pSD = NULL;
	GetSecurityInfo(hDir,SE_FILE_OBJECT,DACL_SECURITY_INFORMATION,NULL,NULL,&pOldDACL,NULL,&pSD);

	EXPLICIT_ACCESS ea={0};
	ea.grfAccessMode = GRANT_ACCESS;
	ea.grfAccessPermissions = GENERIC_ALL;
	ea.grfInheritance = CONTAINER_INHERIT_ACE|OBJECT_INHERIT_ACE;
	ea.Trustee.TrusteeType = TRUSTEE_IS_WELL_KNOWN_GROUP;
	ea.Trustee.TrusteeForm = TRUSTEE_IS_SID;  	
	
	PSID newSID;

	if(ConvertStringSidToSid(lpGroup, &newSID))
	{
		ea.Trustee.ptstrName = (LPTSTR)newSID;

		ACL* pNewDACL = NULL;
		SetEntriesInAcl(1,&ea,pOldDACL,&pNewDACL);

		SetSecurityInfo(hDir,SE_FILE_OBJECT,DACL_SECURITY_INFORMATION,NULL,NULL,pNewDACL,NULL);

		LocalFree(pSD);
		LocalFree(pNewDACL);
		CloseHandle(hDir);

		return true;
	}

	return false;
}