diff --git a/src/simulation/elements/ELEC.cpp b/src/simulation/elements/ELEC.cpp
index 9b3c10086..6390b6adf 100644
--- a/src/simulation/elements/ELEC.cpp
+++ b/src/simulation/elements/ELEC.cpp
@@ -115,7 +115,7 @@ static int update(UPDATE_FUNC_ARGS)
 				parts[ID(r)].tmp2 += 5;
 				parts[ID(r)].life = 1000;
 				break;
-			case PT_RSST:
+			case PT_RSST: //Destroy RSST
 				if(!rx && !ry)
 				{
 					sim->kill_part(ID(r));
diff --git a/src/simulation/elements/GLOW.cpp b/src/simulation/elements/GLOW.cpp
index e3fbf493b..1c4f6d6dd 100644
--- a/src/simulation/elements/GLOW.cpp
+++ b/src/simulation/elements/GLOW.cpp
@@ -66,7 +66,7 @@ static int update(UPDATE_FUNC_ARGS)
 					parts[ID(r)].life = 10;
 					return 1;
 				}
-				else if (TYP(r) == PT_GEL)
+				else if (TYP(r) == PT_GEL) //GLOW + GEL = RSST
 				{
 					sim->kill_part(i);
 					sim->part_change_type(ID(r),x+rx,y+ry,PT_RSST);
diff --git a/src/simulation/elements/GRVT.cpp b/src/simulation/elements/GRVT.cpp
index 0eab88ba3..b6dd2a9c1 100644
--- a/src/simulation/elements/GRVT.cpp
+++ b/src/simulation/elements/GRVT.cpp
@@ -62,6 +62,7 @@ static int update(UPDATE_FUNC_ARGS)
 	int under = pmap[y][x];
 	int utype = TYP(under);
 
+	//Randomly kill GRVT inside RSSS
 	if((utype == PT_RSSS) && sim->rng.chance(1, 5))
 	{
 		sim->kill_part(i);
diff --git a/src/simulation/elements/NEUT.cpp b/src/simulation/elements/NEUT.cpp
index 1652e4fda..183adecfe 100644
--- a/src/simulation/elements/NEUT.cpp
+++ b/src/simulation/elements/NEUT.cpp
@@ -172,7 +172,7 @@ static int update(UPDATE_FUNC_ARGS)
 					ct_under = parts[ID(r)].ctype;
 					tmp_under = parts[ID(r)].tmp;
 
-					//If there's a correct ctype set, use it
+					//If there's a correct ctype set, liquefy into it
 					if(ct_under > 0 && ct_under < PT_NUM)
 					{
 						sim->create_part(ID(r), x, y, ct_under);
@@ -182,7 +182,7 @@ static int update(UPDATE_FUNC_ARGS)
 							parts[ID(r)].ctype = tmp_under;
 					}
 					else
-						sim->part_change_type(ID(r), x, y, PT_RSST);
+						sim->part_change_type(ID(r), x, y, PT_RSST); //Default to RSST if no ctype
 
 					sim->kill_part(i);
 
diff --git a/src/simulation/elements/PHOT.cpp b/src/simulation/elements/PHOT.cpp
index 7fae3824d..2c6d0289a 100644
--- a/src/simulation/elements/PHOT.cpp
+++ b/src/simulation/elements/PHOT.cpp
@@ -114,7 +114,7 @@ static int update(UPDATE_FUNC_ARGS)
 				ct_under = parts[ID(r)].ctype;
 				tmp_under = parts[ID(r)].tmp;
 
-				//If there's a correct ctype set, use it
+				//If there's a correct ctype set, solidify RSST into it
 				if(ct_under > 0 && ct_under < PT_NUM)
 				{
 					sim->create_part(ID(r), x, y, ct_under);
@@ -124,7 +124,7 @@ static int update(UPDATE_FUNC_ARGS)
 						parts[ID(r)].ctype = tmp_under;
 				}
 				else
-					sim->part_change_type(ID(r), x, y, PT_RSSS);
+					sim->part_change_type(ID(r), x, y, PT_RSSS); //Default to RSSS if no ctype
 
 				sim->kill_part(i);
 
diff --git a/src/simulation/elements/PROT.cpp b/src/simulation/elements/PROT.cpp
index 2b915eec2..c161d9808 100644
--- a/src/simulation/elements/PROT.cpp
+++ b/src/simulation/elements/PROT.cpp
@@ -101,7 +101,7 @@ static int update(UPDATE_FUNC_ARGS)
 		else change = 0.0f;
 		parts[uID].temp = restrict_flt(parts[uID].temp + change, MIN_TEMP, MAX_TEMP);
 		break;
-	case PT_RSSS:
+	case PT_RSSS: //Destroy RSSS
 		{
 			sim->kill_part(uID);
 			sim->kill_part(i);
diff --git a/src/simulation/elements/RSSS.cpp b/src/simulation/elements/RSSS.cpp
index 3dbe14502..7ca3fd424 100644
--- a/src/simulation/elements/RSSS.cpp
+++ b/src/simulation/elements/RSSS.cpp
@@ -48,6 +48,7 @@ void Element::Element_RSSS()
 
 static int update(UPDATE_FUNC_ARGS)
 {
+	//Block air like TTAN
 	sim->air->bmap_blockair[y/CELL][x/CELL] = 1;
 	sim->air->bmap_blockairh[y/CELL][x/CELL] = 0x8;
 
diff --git a/src/simulation/elements/SPRK.cpp b/src/simulation/elements/SPRK.cpp
index b1d9d41c8..896e3f206 100644
--- a/src/simulation/elements/SPRK.cpp
+++ b/src/simulation/elements/SPRK.cpp
@@ -69,7 +69,7 @@ static int update(UPDATE_FUNC_ARGS)
 			parts[i].life = 54;
 		else if (ct == PT_SWCH)
 			parts[i].life = 14;
-		else if (ct == PT_RSST)
+		else if (ct == PT_RSST) //RSST disappears at the end of its spark cycle
 		{
 			sim->kill_part(i);
 			return 1;