diff --git a/libfatptr/Makefile b/libfatptr/Makefile
new file mode 100644
index 0000000..49e95d4
--- /dev/null
+++ b/libfatptr/Makefile
@@ -0,0 +1 @@
+libfatptr.o:
diff --git a/libfatstr/libfatstr.c b/libfatptr/libfatptr.c
similarity index 51%
rename from libfatstr/libfatstr.c
rename to libfatptr/libfatptr.c
index 9e4e27e..753327f 100644
--- a/libfatstr/libfatstr.c
+++ b/libfatptr/libfatptr.c
@@ -1,31 +1,31 @@
 #include <stdlib.h> /* free(3), malloc(3), realloc(3) */
 #include <string.h> /* strncpy(3), size_t */
-#include "libfatstr.h"
+#include "libfatptr.h"
 
 /* quick and dirty ASCII edition */
 
 /* Size by which to grow memory allocations. */
-static size_t FatStr_growinterval = 100; /* in sizeof chars */
+static size_t FatPtr_growinterval = 100; /* in sizeof chars */
 
-struct FatStr *
-FatStr_append(struct FatStr *p, FatStr_scalar_t c){
-	FatStr_vector_t t;
+struct FatPtr *
+FatPtr_append(struct FatPtr *p, FatPtr_scalar_t c){
+	FatPtr_vector_t t;
 
 	if(p == NULL || (p->s + (sizeof *(p->v)) > p->a
-			&& FatStr_grow(p, FatStr_growinterval) == NULL))
+			&& FatPtr_grow(p, FatPtr_growinterval) == NULL))
 		return NULL;
 	(p->v)[(p->s)++] = c;
 	return p;
 }
 
-struct FatStr *
-FatStr_construct(struct FatStr *p){
+struct FatPtr *
+FatPtr_construct(struct FatPtr *p){
 
-	return FatStr_grow(FatStr_initialize(p), FatStr_growinterval);
+	return FatPtr_grow(FatPtr_initialize(p), FatPtr_growinterval);
 }
 
 char *
-FatStr_convert(struct FatStr *p){
+FatPtr_convert(struct FatPtr *p){
 	char *r;
 
 	/* allocation might be wrong */
@@ -35,19 +35,19 @@ FatStr_convert(struct FatStr *p){
 	;
 }
 
-struct FatStr *
-FatStr_destruct(struct FatStr *p){
+struct FatPtr *
+FatPtr_destruct(struct FatPtr *p){
 
 	if(p != NULL){
 		free(p->v);
-		FatStr_initialize(p);
+		FatPtr_initialize(p);
 	}
 	return NULL;
 }
 
-struct FatStr *
-FatStr_grow(struct FatStr *p, size_t units){
-	FatStr_vector_t t;
+struct FatPtr *
+FatPtr_grow(struct FatPtr *p, size_t units){
+	FatPtr_vector_t t;
 
 	if(p == NULL || (t = realloc(p->v, p->a + units)) == NULL)
 		return NULL;
@@ -56,8 +56,8 @@ FatStr_grow(struct FatStr *p, size_t units){
 	return p;
 }
 
-struct FatStr *
-FatStr_initialize(struct FatStr *p){
+struct FatPtr *
+FatPtr_initialize(struct FatPtr *p){
 
 	if(p != NULL){
 		p->a = 0;
@@ -67,6 +67,6 @@ FatStr_initialize(struct FatStr *p){
 	return p;
 }
 
-struct FatStr *
-FatStr_trimfront(struct FatStr *p, size_t units){
+struct FatPtr *
+FatPtr_trimfront(struct FatPtr *p, size_t units){
 }
diff --git a/libfatptr/libfatptr.h b/libfatptr/libfatptr.h
new file mode 100644
index 0000000..a2fcbdd
--- /dev/null
+++ b/libfatptr/libfatptr.h
@@ -0,0 +1,40 @@
+/* #include <stdlib.h> /* size_t */
+
+#if !defined FatPtr_size_t
+#	define FatPtr_size_t size_t
+#endif
+#if !defined FatPtr_scalar_t
+#	define FatPtr_scalar_t int
+#endif
+#define FatPtr_vector_t FatPtr_scalar_t *
+
+struct FatPtr{
+	FatPtr_size_t a; /* allocation in sizeof char */
+	FatPtr_size_t s; /* actual size in sizeof *v */
+	FatPtr_vector_t v; /* vector */
+};
+
+/* FatPtr_append
+ * - FatPtr *p: object to which to append
+ * - FatPtr_scalar_t c: scalar to be appended
+ * Returns NULL if the operation failed (due to malloc(3)) or if p was NULL.
+ * Otherwise returns p. */
+struct FatPtr *FatPtr_append(struct FatPtr *p, FatPtr_scalar_t c);
+
+struct FatPtr *FatPtr_construct(struct FatPtr *p);
+
+/* FatPtr_convert
+ * - FatPtr *p: object to convert
+ * Returns NULL if the operation failed (due to malloc(3)) or if p was NULL.
+ * Otherwise returns a malloc(3)d char * with the current content of p, which
+ * should be free(3)d when no longer in use. */
+char *FatPtr_convert(struct FatPtr *p);
+
+/* FatPtr_destruct
+ * - FatPtr *p: object to destruct
+ * Returns NULL. */
+struct FatPtr *FatPtr_destruct(struct FatPtr *p);
+
+struct FatPtr *FatPtr_grow(struct FatPtr *p, size_t units);
+struct FatPtr *FatPtr_initialize(struct FatPtr *p);
+struct FatPtr *FatPtr_trimfront(struct FatPtr *p, size_t units);
diff --git a/libfatstr/Makefile b/libfatstr/Makefile
deleted file mode 100644
index fc93cd7..0000000
--- a/libfatstr/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-libfatstr.o:
diff --git a/libfatstr/libfatstr.h b/libfatstr/libfatstr.h
deleted file mode 100644
index f6d0c00..0000000
--- a/libfatstr/libfatstr.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/* #include <stdlib.h> /* size_t */
-/* These definitions aren't set in stone. */
-typedef size_t FatStr_size_t;
-typedef int FatStr_scalar_t;
-typedef FatStr_scalar_t * FatStr_vector_t;
-
-/* This definition is dependable. */
-struct FatStr{
-	FatStr_size_t a; /* allocation in sizeof char */
-	FatStr_size_t s; /* actual size in sizeof *v */
-	FatStr_vector_t v; /* vector */
-};
-
-/* FatStr_append
- * - FatStr *p: object to which to append
- * - FatStr_scalar_t c: scalar to be appended
- * Returns NULL if the operation failed (due to malloc(3)) or if p was NULL.
- * Otherwise returns p. */
-struct FatStr *FatStr_append(struct FatStr *p, FatStr_scalar_t c);
-
-struct FatStr *FatStr_construct(struct FatStr *p);
-
-/* FatStr_convert
- * - FatStr *p: object to convert
- * Returns NULL if the operation failed (due to malloc(3)) or if p was NULL.
- * Otherwise returns a malloc(3)d char * with the current content of p, which
- * should be free(3)d when no longer in use. */
-char *FatStr_convert(struct FatStr *p);
-
-/* FatStr_destruct
- * - FatStr *p: object to destruct
- * Returns NULL. */
-struct FatStr *FatStr_destruct(struct FatStr *p);
-
-struct FatStr *FatStr_grow(struct FatStr *p, size_t units);
-struct FatStr *FatStr_initialize(struct FatStr *p);
-struct FatStr *FatStr_trimfront(struct FatStr *p, size_t units);