diff --git a/source/blender/blenkernel/intern/idprop.c b/source/blender/blenkernel/intern/idprop.c
index 9fdf51ceba9..19ef1e3971d 100644
--- a/source/blender/blenkernel/intern/idprop.c
+++ b/source/blender/blenkernel/intern/idprop.c
@@ -454,7 +454,7 @@ void IDP_ReplaceGroupInGroup(IDProperty *dest, IDProperty *src)
 			if (strcmp(loop->name, prop->name) == 0) {
 				IDProperty *copy = IDP_CopyProperty(prop);
 
-				BLI_insertlink(&dest->data.group, loop, copy);
+				BLI_insertlinkafter(&dest->data.group, loop, copy);
 
 				BLI_remlink(&dest->data.group, loop);
 				IDP_FreeProperty(loop);
@@ -479,7 +479,7 @@ void IDP_ReplaceInGroup(IDProperty *group, IDProperty *prop)
 {
 	IDProperty *loop;
 	if ((loop = IDP_GetPropertyFromGroup(group, prop->name))) {
-		BLI_insertlink(&group->data.group, loop, prop);
+		BLI_insertlinkafter(&group->data.group, loop, prop);
 		
 		BLI_remlink(&group->data.group, loop);
 		IDP_FreeProperty(loop);
@@ -532,7 +532,7 @@ int IDP_InsertToGroup(IDProperty *group, IDProperty *previous, IDProperty *pnew)
 {
 	if (IDP_GetPropertyFromGroup(group, pnew->name) == NULL) {
 		group->len++;
-		BLI_insertlink(&group->data.group, previous, pnew);
+		BLI_insertlinkafter(&group->data.group, previous, pnew);
 		return 1;
 	}
 
diff --git a/source/blender/blenkernel/intern/key.c b/source/blender/blenkernel/intern/key.c
index cb0a11a16e0..f3dc391738e 100644
--- a/source/blender/blenkernel/intern/key.c
+++ b/source/blender/blenkernel/intern/key.c
@@ -246,7 +246,7 @@ void BKE_key_sort(Key *key)
 		/* find the right location and insert before */
 		for (kb2 = key->block.first; kb2; kb2 = kb2->next) {
 			if (kb2->pos > kb->pos) {
-				BLI_insertlink(&key->block, kb2->prev, kb);
+				BLI_insertlinkafter(&key->block, kb2->prev, kb);
 				break;
 			}
 		}
diff --git a/source/blender/blenkernel/intern/sca.c b/source/blender/blenkernel/intern/sca.c
index eb4e0d9c679..6433b73fda0 100644
--- a/source/blender/blenkernel/intern/sca.c
+++ b/source/blender/blenkernel/intern/sca.c
@@ -734,7 +734,7 @@ void sca_move_sensor(bSensor *sens_to_move, Object *ob, int move_up)
 		}
 		if (tmp) {
 			BLI_remlink(&ob->sensors, sens);
-			BLI_insertlink(&ob->sensors, tmp, sens);
+			BLI_insertlinkafter(&ob->sensors, tmp, sens);
 		}
 	}
 }
@@ -778,7 +778,7 @@ void sca_move_controller(bController *cont_to_move, Object *ob, int move_up)
 			tmp = tmp->next;
 		}
 		BLI_remlink(&ob->controllers, cont);
-		BLI_insertlink(&ob->controllers, tmp, cont);
+		BLI_insertlinkafter(&ob->controllers, tmp, cont);
 	}
 }
 
@@ -818,7 +818,7 @@ void sca_move_actuator(bActuator *act_to_move, Object *ob, int move_up)
 		}
 		if (tmp) {
 			BLI_remlink(&ob->actuators, act);
-			BLI_insertlink(&ob->actuators, tmp, act);
+			BLI_insertlinkafter(&ob->actuators, tmp, act);
 		}
 	}
 }
diff --git a/source/blender/blenlib/BLI_listbase.h b/source/blender/blenlib/BLI_listbase.h
index d06956e39de..54cd687eeac 100644
--- a/source/blender/blenlib/BLI_listbase.h
+++ b/source/blender/blenlib/BLI_listbase.h
@@ -32,6 +32,7 @@
  *  \ingroup bli
  */
 
+#include "BLI_utildefines.h"
 #include "DNA_listBase.h"
 //struct ListBase;
 //struct LinkData;
@@ -40,7 +41,6 @@
 extern "C" {
 #endif
 
-void BLI_insertlink(struct ListBase *listbase, void *vprevlink, void *vnewlink);
 int BLI_findindex(const struct ListBase *listbase, const void *vlink);
 int BLI_findstringindex(const struct ListBase *listbase, const char *id, const int offset);
 
@@ -59,7 +59,7 @@ void *BLI_rfindptr(const struct ListBase *listbase, const void *ptr, const int o
 void BLI_freelistN(struct ListBase *listbase);
 void BLI_addtail(struct ListBase *listbase, void *vlink);
 void BLI_remlink(struct ListBase *listbase, void *vlink);
-int BLI_remlink_safe(struct ListBase *listbase, void *vlink);
+bool BLI_remlink_safe(struct ListBase *listbase, void *vlink);
 
 void BLI_addhead(struct ListBase *listbase, void *vlink);
 void BLI_insertlinkbefore(struct ListBase *listbase, void *vnextlink, void *vnewlink);
diff --git a/source/blender/blenlib/intern/listbase.c b/source/blender/blenlib/intern/listbase.c
index c60a9ae6bfc..348efaf40a9 100644
--- a/source/blender/blenlib/intern/listbase.c
+++ b/source/blender/blenlib/intern/listbase.c
@@ -28,9 +28,10 @@
 
 /** \file blender/blenlib/intern/listbase.c
  *  \ingroup bli
+ *
+ * Manipulations on ListBase structs
  */
 
-
 #include <string.h>
 #include <stdlib.h>
 
@@ -41,10 +42,11 @@
 
 #include "BLI_listbase.h"
 
-
 /* implementation */
 
-/* Ripped this from blender.c */
+/**
+ * moves the entire contents of \a src onto the end of \a dst.
+ */
 void BLI_movelisttolist(ListBase *dst, ListBase *src)
 {
 	if (src->first == NULL) return;
@@ -61,6 +63,9 @@ void BLI_movelisttolist(ListBase *dst, ListBase *src)
 	src->first = src->last = NULL;
 }
 
+/**
+ * Prepends \a vlink (assumed to begin with a Link) onto listbase.
+ */
 void BLI_addhead(ListBase *listbase, void *vlink)
 {
 	Link *link = vlink;
@@ -77,6 +82,9 @@ void BLI_addhead(ListBase *listbase, void *vlink)
 }
 
 
+/**
+ * Appends \a vlink (assumed to begin with a Link) onto listbase.
+ */
 void BLI_addtail(ListBase *listbase, void *vlink)
 {
 	Link *link = vlink;
@@ -93,6 +101,9 @@ void BLI_addtail(ListBase *listbase, void *vlink)
 }
 
 
+/**
+ * Removes \a vlink from \a listbase. Assumes it is linked into there!
+ */
 void BLI_remlink(ListBase *listbase, void *vlink)
 {
 	Link *link = vlink;
@@ -107,18 +118,24 @@ void BLI_remlink(ListBase *listbase, void *vlink)
 	if (listbase->first == link) listbase->first = link->next;
 }
 
-int BLI_remlink_safe(ListBase *listbase, void *vlink)
+/**
+ * Checks that \a vlink is linked into listbase, removing it from there if so.
+ */
+bool BLI_remlink_safe(ListBase *listbase, void *vlink)
 {
 	if (BLI_findindex(listbase, vlink) != -1) {
 		BLI_remlink(listbase, vlink);
-		return 1;
+		return true;
 	}
 	else {
-		return 0;
+		return false;
 	}
 }
 
 
+/**
+ * Removes \a vlink from listbase and disposes of it. Assumes it is linked into there!
+ */
 void BLI_freelinkN(ListBase *listbase, void *vlink)
 {
 	Link *link = vlink;
@@ -131,43 +148,11 @@ void BLI_freelinkN(ListBase *listbase, void *vlink)
 }
 
 
-void BLI_insertlink(ListBase *listbase, void *vprevlink, void *vnewlink)
-{
-	Link *prevlink = vprevlink;
-	Link *newlink = vnewlink;
-
-	/* newlink comes after prevlink */
-	if (newlink == NULL) return;
-	if (listbase == NULL) return;
-	
-	/* empty list */
-	if (listbase->first == NULL) {
-		
-		listbase->first = newlink;
-		listbase->last = newlink;
-		return;
-	}
-	
-	/* insert before first element */
-	if (prevlink == NULL) {
-		newlink->next = listbase->first;
-		newlink->prev = NULL;
-		newlink->next->prev = newlink;
-		listbase->first = newlink;
-		return;
-	}
-
-	/* at end of list */
-	if (listbase->last == prevlink)
-		listbase->last = newlink;
-
-	newlink->next = prevlink->next;
-	prevlink->next = newlink;
-	if (newlink->next) newlink->next->prev = newlink;
-	newlink->prev = prevlink;
-}
-
-/* This uses insertion sort, so NOT ok for large list */
+/**
+ * Sorts the elements of listbase into the order defined by cmp
+ * (which should return 1 iff its first arg should come after its second arg).
+ * This uses insertion sort, so NOT ok for large list.
+ */
 void BLI_sortlist(ListBase *listbase, int (*cmp)(void *, void *))
 {
 	Link *current = NULL;
@@ -193,6 +178,10 @@ void BLI_sortlist(ListBase *listbase, int (*cmp)(void *, void *))
 	}
 }
 
+/**
+ * Inserts \a vnewlink immediately following \a vprevlink in \a listbase.
+ * Or, if \a vprevlink is NULL, puts \a vnewlink at the front of the list.
+ */
 void BLI_insertlinkafter(ListBase *listbase, void *vprevlink, void *vnewlink)
 {
 	Link *prevlink = vprevlink;
@@ -213,21 +202,28 @@ void BLI_insertlinkafter(ListBase *listbase, void *vprevlink, void *vnewlink)
 	if (prevlink == NULL) {
 		newlink->prev = NULL;
 		newlink->next = listbase->first;
-		((Link *)listbase->first)->prev = newlink;
+		newlink->next->prev = newlink;
 		listbase->first = newlink;
 		return;
 	}
 
 	/* at end of list */
-	if (listbase->last == prevlink) 
+	if (listbase->last == prevlink) {
 		listbase->last = newlink;
+	}
 
 	newlink->next = prevlink->next;
 	newlink->prev = prevlink;
 	prevlink->next = newlink;
-	if (newlink->next) newlink->next->prev = newlink;
+	if (newlink->next) {
+		newlink->next->prev = newlink;
+	}
 }
 
+/**
+ * Inserts \a vnewlink immediately preceding \a vnextlink in listbase.
+ * Or, if \a vnextlink is NULL, puts \a vnewlink at the end of the list.
+ */
 void BLI_insertlinkbefore(ListBase *listbase, void *vnextlink, void *vnewlink)
 {
 	Link *nextlink = vnextlink;
@@ -254,16 +250,22 @@ void BLI_insertlinkbefore(ListBase *listbase, void *vnextlink, void *vnewlink)
 	}
 
 	/* at beginning of list */
-	if (listbase->first == nextlink)
+	if (listbase->first == nextlink) {
 		listbase->first = newlink;
+	}
 
 	newlink->next = nextlink;
 	newlink->prev = nextlink->prev;
 	nextlink->prev = newlink;
-	if (newlink->prev) newlink->prev->next = newlink;
+	if (newlink->prev) {
+		newlink->prev->next = newlink;
+	}
 }
 
 
+/**
+ * Removes and disposes of the entire contents of listbase using direct free(3).
+ */
 void BLI_freelist(ListBase *listbase)
 {
 	Link *link, *next;
@@ -282,6 +284,9 @@ void BLI_freelist(ListBase *listbase)
 	listbase->last = NULL;
 }
 
+/**
+ * Removes and disposes of the entire contents of \a listbase using guardedalloc.
+ */
 void BLI_freelistN(ListBase *listbase)
 {
 	Link *link, *next;
@@ -300,6 +305,9 @@ void BLI_freelistN(ListBase *listbase)
 }
 
 
+/**
+ * Returns the number of elements in \a listbase.
+ */
 int BLI_countlist(const ListBase *listbase)
 {
 	Link *link;
@@ -315,6 +323,9 @@ int BLI_countlist(const ListBase *listbase)
 	return count;
 }
 
+/**
+ * Returns the nth element of \a listbase, numbering from 1.
+ */
 void *BLI_findlink(const ListBase *listbase, int number)
 {
 	Link *link = NULL;
@@ -330,6 +341,9 @@ void *BLI_findlink(const ListBase *listbase, int number)
 	return link;
 }
 
+/**
+ * Returns the nth-last element of \a listbase, numbering from 1.
+ */
 void *BLI_rfindlink(const ListBase *listbase, int number)
 {
 	Link *link = NULL;
@@ -345,6 +359,9 @@ void *BLI_rfindlink(const ListBase *listbase, int number)
 	return link;
 }
 
+/**
+ * Returns the position of \a vlink within \a listbase, numbering from 1, or -1 if not found.
+ */
 int BLI_findindex(const ListBase *listbase, const void *vlink)
 {
 	Link *link = NULL;
@@ -365,6 +382,10 @@ int BLI_findindex(const ListBase *listbase, const void *vlink)
 	return -1;
 }
 
+/**
+ * Finds the first element of \a listbase which contains the null-terminated
+ * string \a id at the specified offset, returning NULL if not found.
+ */
 void *BLI_findstring(const ListBase *listbase, const char *id, const int offset)
 {
 	Link *link = NULL;
@@ -383,6 +404,10 @@ void *BLI_findstring(const ListBase *listbase, const char *id, const int offset)
 	return NULL;
 }
 /* same as above but find reverse */
+/**
+ * Finds the last element of \a listbase which contains the
+ * null-terminated string \a id at the specified offset, returning NULL if not found.
+ */
 void *BLI_rfindstring(const ListBase *listbase, const char *id, const int offset)
 {
 	Link *link = NULL;
@@ -401,6 +426,10 @@ void *BLI_rfindstring(const ListBase *listbase, const char *id, const int offset
 	return NULL;
 }
 
+/**
+ * Finds the first element of \a listbase which contains a pointer to the
+ * null-terminated string \a id at the specified offset, returning NULL if not found.
+ */
 void *BLI_findstring_ptr(const ListBase *listbase, const char *id, const int offset)
 {
 	Link *link = NULL;
@@ -420,6 +449,10 @@ void *BLI_findstring_ptr(const ListBase *listbase, const char *id, const int off
 	return NULL;
 }
 /* same as above but find reverse */
+/**
+ * Finds the last element of \a listbase which contains a pointer to the
+ * null-terminated string \a id at the specified offset, returning NULL if not found.
+ */
 void *BLI_rfindstring_ptr(const ListBase *listbase, const char *id, const int offset)
 {
 	Link *link = NULL;
@@ -440,6 +473,8 @@ void *BLI_rfindstring_ptr(const ListBase *listbase, const char *id, const int of
 }
 
 void *BLI_findptr(const ListBase *listbase, const void *ptr, const int offset)
+/* finds the first element of listbase which contains the specified pointer value
+at the specified offset, returning NULL if not found. */
 {
 	Link *link = NULL;
 	const void *ptr_iter;
@@ -448,7 +483,7 @@ void *BLI_findptr(const ListBase *listbase, const void *ptr, const int offset)
 
 	for (link = listbase->first; link; link = link->next) {
 		/* exact copy of BLI_findstring(), except for this line */
-		ptr_iter = *((const char **)(((const char *)link) + offset));
+		ptr_iter = *((const void **)(((const char *)link) + offset));
 
 		if (ptr == ptr_iter) {
 			return link;
@@ -459,6 +494,8 @@ void *BLI_findptr(const ListBase *listbase, const void *ptr, const int offset)
 }
 /* same as above but find reverse */
 void *BLI_rfindptr(const ListBase *listbase, const void *ptr, const int offset)
+/* finds the last element of listbase which contains the specified pointer value
+at the specified offset, returning NULL if not found. */
 {
 	Link *link = NULL;
 	const void *ptr_iter;
@@ -467,7 +504,7 @@ void *BLI_rfindptr(const ListBase *listbase, const void *ptr, const int offset)
 
 	for (link = listbase->last; link; link = link->prev) {
 		/* exact copy of BLI_rfindstring(), except for this line */
-		ptr_iter = *((const char **)(((const char *)link) + offset));
+		ptr_iter = *((const void **)(((const char *)link) + offset));
 
 		if (ptr == ptr_iter) {
 			return link;
@@ -478,6 +515,8 @@ void *BLI_rfindptr(const ListBase *listbase, const void *ptr, const int offset)
 }
 
 int BLI_findstringindex(const ListBase *listbase, const char *id, const int offset)
+/* returns the 1-based index of the first element of listbase which contains the specified
+null-terminated string at the specified offset, or -1 if not found. */
 {
 	Link *link = NULL;
 	const char *id_iter;
@@ -499,6 +538,7 @@ int BLI_findstringindex(const ListBase *listbase, const char *id, const int offs
 }
 
 void BLI_duplicatelist(ListBase *dst, const ListBase *src)
+/* sets dst to a duplicate of the entire contents of src. dst may be the same as src. */
 {
 	struct Link *dst_link, *src_link;
 
diff --git a/source/blender/editors/interface/interface.c b/source/blender/editors/interface/interface.c
index e10d588c19f..37249896e34 100644
--- a/source/blender/editors/interface/interface.c
+++ b/source/blender/editors/interface/interface.c
@@ -636,7 +636,7 @@ static int ui_but_update_from_old_block(const bContext *C, uiBlock *block, uiBut
 			
 				/* move button over from oldblock to new block */
 				BLI_remlink(&oldblock->buttons, oldbut);
-				BLI_insertlink(&block->buttons, but, oldbut);
+				BLI_insertlinkafter(&block->buttons, but, oldbut);
 				oldbut->block = block;
 				*butpp = oldbut;
 				
diff --git a/source/blender/editors/object/object_modifier.c b/source/blender/editors/object/object_modifier.c
index 7c74fa24893..8d29813e2ac 100644
--- a/source/blender/editors/object/object_modifier.c
+++ b/source/blender/editors/object/object_modifier.c
@@ -385,7 +385,7 @@ int ED_object_modifier_move_up(ReportList *reports, Object *ob, ModifierData *md
 		}
 
 		BLI_remlink(&ob->modifiers, md);
-		BLI_insertlink(&ob->modifiers, md->prev->prev, md);
+		BLI_insertlinkbefore(&ob->modifiers, md->prev, md);
 	}
 
 	return 1;
@@ -406,7 +406,7 @@ int ED_object_modifier_move_down(ReportList *reports, Object *ob, ModifierData *
 		}
 
 		BLI_remlink(&ob->modifiers, md);
-		BLI_insertlink(&ob->modifiers, md->next, md);
+		BLI_insertlinkafter(&ob->modifiers, md->next, md);
 	}
 
 	return 1;
@@ -722,7 +722,7 @@ int ED_object_modifier_copy(ReportList *UNUSED(reports), Object *ob, ModifierDat
 	
 	nmd = modifier_new(md->type);
 	modifier_copyData(md, nmd);
-	BLI_insertlink(&ob->modifiers, md, nmd);
+	BLI_insertlinkafter(&ob->modifiers, md, nmd);
 	modifier_unique_name(&ob->modifiers, nmd);
 
 	return 1;
diff --git a/source/blender/editors/physics/particle_boids.c b/source/blender/editors/physics/particle_boids.c
index 154daf0eb72..8a5f623c533 100644
--- a/source/blender/editors/physics/particle_boids.c
+++ b/source/blender/editors/physics/particle_boids.c
@@ -157,7 +157,7 @@ static int rule_move_up_exec(bContext *C, wmOperator *UNUSED(op))
 	for (rule = state->rules.first; rule; rule=rule->next) {
 		if (rule->flag & BOIDRULE_CURRENT && rule->prev) {
 			BLI_remlink(&state->rules, rule);
-			BLI_insertlink(&state->rules, rule->prev->prev, rule);
+			BLI_insertlinkbefore(&state->rules, rule->prev, rule);
 
 			DAG_id_tag_update(&part->id, OB_RECALC_DATA|PSYS_RECALC_RESET);
 			break;
@@ -193,7 +193,7 @@ static int rule_move_down_exec(bContext *C, wmOperator *UNUSED(op))
 	for (rule = state->rules.first; rule; rule=rule->next) {
 		if (rule->flag & BOIDRULE_CURRENT && rule->next) {
 			BLI_remlink(&state->rules, rule);
-			BLI_insertlink(&state->rules, rule->next, rule);
+			BLI_insertlinkafter(&state->rules, rule->next, rule);
 
 			DAG_id_tag_update(&part->id, OB_RECALC_DATA|PSYS_RECALC_RESET);
 			break;
@@ -314,7 +314,7 @@ static int state_move_up_exec(bContext *C, wmOperator *UNUSED(op))
 	for (state = boids->states.first; state; state=state->next) {
 		if (state->flag & BOIDSTATE_CURRENT && state->prev) {
 			BLI_remlink(&boids->states, state);
-			BLI_insertlink(&boids->states, state->prev->prev, state);
+			BLI_insertlinkbefore(&boids->states, state->prev, state);
 			break;
 		}
 	}
@@ -349,7 +349,7 @@ static int state_move_down_exec(bContext *C, wmOperator *UNUSED(op))
 	for (state = boids->states.first; state; state=state->next) {
 		if (state->flag & BOIDSTATE_CURRENT && state->next) {
 			BLI_remlink(&boids->states, state);
-			BLI_insertlink(&boids->states, state->next, state);
+			BLI_insertlinkafter(&boids->states, state->next, state);
 			DAG_id_tag_update(&part->id, OB_RECALC_DATA|PSYS_RECALC_RESET);
 			break;
 		}
diff --git a/source/blender/editors/physics/particle_object.c b/source/blender/editors/physics/particle_object.c
index 8cae0140b5a..5fd2a0806e9 100644
--- a/source/blender/editors/physics/particle_object.c
+++ b/source/blender/editors/physics/particle_object.c
@@ -310,7 +310,7 @@ static int target_move_up_exec(bContext *C, wmOperator *UNUSED(op))
 	for (; pt; pt=pt->next) {
 		if (pt->flag & PTARGET_CURRENT && pt->prev) {
 			BLI_remlink(&psys->targets, pt);
-			BLI_insertlink(&psys->targets, pt->prev->prev, pt);
+			BLI_insertlinkbefore(&psys->targets, pt->prev, pt);
 
 			DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
 			WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE, ob);
@@ -348,7 +348,7 @@ static int target_move_down_exec(bContext *C, wmOperator *UNUSED(op))
 	for (; pt; pt=pt->next) {
 		if (pt->flag & PTARGET_CURRENT && pt->next) {
 			BLI_remlink(&psys->targets, pt);
-			BLI_insertlink(&psys->targets, pt->next, pt);
+			BLI_insertlinkafter(&psys->targets, pt->next, pt);
 
 			DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
 			WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE, ob);
@@ -387,7 +387,7 @@ static int dupliob_move_up_exec(bContext *C, wmOperator *UNUSED(op))
 	for (dw=part->dupliweights.first; dw; dw=dw->next) {
 		if (dw->flag & PART_DUPLIW_CURRENT && dw->prev) {
 			BLI_remlink(&part->dupliweights, dw);
-			BLI_insertlink(&part->dupliweights, dw->prev->prev, dw);
+			BLI_insertlinkbefore(&part->dupliweights, dw->prev, dw);
 
 			WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE, NULL);
 			break;
@@ -509,7 +509,7 @@ static int dupliob_move_down_exec(bContext *C, wmOperator *UNUSED(op))
 	for (dw=part->dupliweights.first; dw; dw=dw->next) {
 		if (dw->flag & PART_DUPLIW_CURRENT && dw->next) {
 			BLI_remlink(&part->dupliweights, dw);
-			BLI_insertlink(&part->dupliweights, dw->next, dw);
+			BLI_insertlinkafter(&part->dupliweights, dw->next, dw);
 
 			WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE, NULL);
 			break;
diff --git a/source/blender/editors/space_sequencer/sequencer_modifier.c b/source/blender/editors/space_sequencer/sequencer_modifier.c
index a4a485b34c6..51df21e509a 100644
--- a/source/blender/editors/space_sequencer/sequencer_modifier.c
+++ b/source/blender/editors/space_sequencer/sequencer_modifier.c
@@ -180,13 +180,13 @@ static int strip_modifier_move_exec(bContext *C, wmOperator *op)
 	if (direction == SEQ_MODIFIER_MOVE_UP) {
 		if (smd->prev) {
 			BLI_remlink(&seq->modifiers, smd);
-			BLI_insertlink(&seq->modifiers, smd->prev->prev, smd);
+			BLI_insertlinkbefore(&seq->modifiers, smd->prev, smd);
 		}
 	}
 	else if (direction == SEQ_MODIFIER_MOVE_DOWN) {
 		if (smd->next) {
 			BLI_remlink(&seq->modifiers, smd);
-			BLI_insertlink(&seq->modifiers, smd->next, smd);
+			BLI_insertlinkafter(&seq->modifiers, smd->next, smd);
 		}
 	}
 
diff --git a/source/blender/makesdna/DNA_listBase.h b/source/blender/makesdna/DNA_listBase.h
index 333e414278d..f6035cd6653 100644
--- a/source/blender/makesdna/DNA_listBase.h
+++ b/source/blender/makesdna/DNA_listBase.h
@@ -31,6 +31,9 @@
  *  \ingroup DNA
  *  \brief These structs are the foundation for all linked lists in the
  *         library system.
+ *
+ * Doubly-linked lists start from a ListBase and contain elements beginning
+ * with Link.
  */
 
 #ifndef __DNA_LISTBASE_H__
@@ -40,13 +43,13 @@
 extern "C" {
 #endif
 
-/* generic - all structs which are used in linked-lists used this */
+/* generic - all structs which are put into linked lists begin with this */
 typedef struct Link {
 	struct Link *next, *prev;
 } Link;
 
 
-/* use this when it is not worth defining a custom one... */
+/* simple subclass of Link--use this when it is not worth defining a custom one... */
 typedef struct LinkData {
 	struct LinkData *next, *prev;
 	void *data;
diff --git a/source/blender/makesrna/intern/rna_action.c b/source/blender/makesrna/intern/rna_action.c
index bf6faa3f2cc..7de1f84acdd 100644
--- a/source/blender/makesrna/intern/rna_action.c
+++ b/source/blender/makesrna/intern/rna_action.c
@@ -159,7 +159,7 @@ static TimeMarker *rna_Action_pose_markers_new(bAction *act, const char name[])
 static void rna_Action_pose_markers_remove(bAction *act, ReportList *reports, PointerRNA *marker_ptr)
 {
 	TimeMarker *marker = marker_ptr->data;
-	if (BLI_remlink_safe(&act->markers, marker) == FALSE) {
+	if (!BLI_remlink_safe(&act->markers, marker)) {
 		BKE_reportf(reports, RPT_ERROR, "Timeline marker '%s' not found in action '%s'", marker->name, act->id.name + 2);
 		return;
 	}