diff --git a/Inc/Nmea0183Parser_Private.h b/Inc/Nmea0183Parser_Private.h
index e9200ff..d70d949 100644
--- a/Inc/Nmea0183Parser_Private.h
+++ b/Inc/Nmea0183Parser_Private.h
@@ -29,7 +29,11 @@
 #define Nmea0183SkipToStartDelimiter(STR, STR_END) Nmea0183SkipToChar(STR,STR_END,Nmea0183StartDelimiter)
 #define Nmea0183SkipToCheckSumDelimiter(STR, STR_END) Nmea0183SkipToChar(STR,STR_END,Nmea0183CheckSumDelimiter)
 
+#define NmeaParsePrepare     char *end = Nmea0183SkipToCheckSumDelimiter(str, str + len);\
+                             char *front = str;\
+                             char *nextDivider = front - 1;
 
+#define NmeaSkipToNextPortion Nmea0183ParseNextPortion(&front, &nextDivider, end);
 
 #define NMEA_ASSERT(x) if(!(x)){return 0;};