diff --git a/EXRAIL2.cpp b/EXRAIL2.cpp
index 1114364..492cd4e 100644
--- a/EXRAIL2.cpp
+++ b/EXRAIL2.cpp
@@ -519,31 +519,21 @@ bool RMFT2::skipIfBlock() {
   while (nest > 0) {
     SKIPOP;
     byte opcode =  GET_OPCODE;
-    switch(opcode) {
-    case OPCODE_ENDEXRAIL:
-      kill(F("missing ENDIF"), nest);
-      return false;
-    case OPCODE_IF:
-    case OPCODE_IFCLOSED:
-    case OPCODE_IFGTE:
-    case OPCODE_IFLT:
-    case OPCODE_IFNOT:
-    case OPCODE_IFRANDOM:
-    case OPCODE_IFRESERVE:
-    case OPCODE_IFTHROWN:
-    case OPCODE_IFTIMEOUT:
-    case OPCODE_IFRED:
-    case OPCODE_IFAMBER:
-    case OPCODE_IFGREEN:
-      nest++;
-      break;
-    case OPCODE_ENDIF:
-      nest--;
-      break;
-    case OPCODE_ELSE:
-      // if nest==1 then this is the ELSE for the IF we are skipping
-      if (nest==1) nest=0; // cause loop exit and return after ELSE
-      break;
+    // all other IF type commands increase the nesting level
+    if (opcode>IF_TYPE_OPCODES) nest++;
+    else switch(opcode) {
+      case OPCODE_ENDEXRAIL:
+        kill(F("missing ENDIF"), nest);
+        return false;
+    
+      case OPCODE_ENDIF:
+        nest--;
+        break;
+    
+      case OPCODE_ELSE:
+        // if nest==1 then this is the ELSE for the IF we are skipping
+        if (nest==1) nest=0; // cause loop exit and return after ELSE
+        break;
     default:
       break;
     }
@@ -574,7 +564,7 @@ void RMFT2::loop2() {
 
   // skipIf will get set to indicate a failing IF condition 
   bool skipIf=false; 
-  
+
   // if (diag) DIAG(F("RMFT2 %d %d"),opcode,operand);
   // Attention: Returning from this switch leaves the program counter unchanged.
   //            This is used for unfinished waits for timers or sensors.
diff --git a/EXRAIL2.h b/EXRAIL2.h
index e881e3b..b44ce6c 100644
--- a/EXRAIL2.h
+++ b/EXRAIL2.h
@@ -35,10 +35,9 @@ enum OPCODE : byte {OPCODE_THROW,OPCODE_CLOSE,
              OPCODE_RESERVE,OPCODE_FREE,
              OPCODE_AT,OPCODE_AFTER,OPCODE_AUTOSTART,
              OPCODE_ATGTE,OPCODE_ATLT,
-             OPCODE_ATTIMEOUT1,OPCODE_ATTIMEOUT2,OPCODE_IFTIMEOUT,
+             OPCODE_ATTIMEOUT1,OPCODE_ATTIMEOUT2,
              OPCODE_LATCH,OPCODE_UNLATCH,OPCODE_SET,OPCODE_RESET,
-             OPCODE_IF,OPCODE_IFNOT,OPCODE_ENDIF,OPCODE_IFRANDOM,OPCODE_IFRESERVE,
-             OPCODE_IFCLOSED, OPCODE_IFTHROWN,OPCODE_ELSE,
+             OPCODE_ENDIF,OPCODE_ELSE,
              OPCODE_DELAY,OPCODE_DELAYMINS,OPCODE_DELAYMS,OPCODE_RANDWAIT,
              OPCODE_FON,OPCODE_FOFF,OPCODE_XFON,OPCODE_XFOFF,
              OPCODE_RED,OPCODE_GREEN,OPCODE_AMBER,OPCODE_DRIVE,
@@ -49,10 +48,21 @@ enum OPCODE : byte {OPCODE_THROW,OPCODE_CLOSE,
              OPCODE_PAUSE, OPCODE_RESUME,OPCODE_POWEROFF,OPCODE_POWERON,
              OPCODE_ONCLOSE, OPCODE_ONTHROW, OPCODE_SERVOTURNOUT, OPCODE_PINTURNOUT,
              OPCODE_PRINT,OPCODE_DCCACTIVATE,
-             OPCODE_ONACTIVATE,OPCODE_ONDEACTIVATE,OPCODE_IFGTE,OPCODE_IFLT,
+             OPCODE_ONACTIVATE,OPCODE_ONDEACTIVATE,
              OPCODE_ROSTER,OPCODE_KILLALL,
+             OPCODE_ROUTE,OPCODE_AUTOMATION,OPCODE_SEQUENCE,
+             OPCODE_ENDTASK,OPCODE_ENDEXRAIL,
+
+             // OPcodes below this point are skip-nesting IF operations
+             // placed here so that they may be skipped as a group
+             // see skipIfBlock()
+            IF_TYPE_OPCODES, // do not move this... 
              OPCODE_IFRED,OPCODE_IFAMBER,OPCODE_IFGREEN,
-             OPCODE_ROUTE,OPCODE_AUTOMATION,OPCODE_SEQUENCE,OPCODE_ENDTASK,OPCODE_ENDEXRAIL
+             OPCODE_IFGTE,OPCODE_IFLT,
+             OPCODE_IFTIMEOUT,
+             OPCODE_IF,OPCODE_IFNOT,
+             OPCODE_IFRANDOM,OPCODE_IFRESERVE,
+             OPCODE_IFCLOSED, OPCODE_IFTHROWN
              };