minor comments
diff --git a/build/exe.mk b/build/exe.mk
index 987771b..b905c8b 100644
--- a/build/exe.mk
+++ b/build/exe.mk
@@ -51,8 +51,6 @@
 
 LFLAGS  = -L$(LIBPATH)
 
-#@@@ OBJS = $(SRCS_C:%.c=%.o) $(SRCS_CC:%.cc=%.o) $(SRCS_CPP:%.cpp=%.o) $(SRCS_NASM:%.nasm=%.o)
-#@@@ OBJS = $(SRCS_C:%.c=%.$(BUILD).o) $(SRCS_CC:%.cc=%.$(BUILD).o) $(SRCS_CPP:%.cpp=%.$(BUILD).o) $(SRCS_NASM:%.nasm=%.$(BUILD).o)
 DEBUG_OBJS = $(SRCS_C:%.c=%.debug.o) $(SRCS_CC:%.cc=%.debug.o) $(SRCS_CPP:%.cpp=%.debug.o) $(SRCS_NASM:%.nasm=%.debug.o)
 RELEASE_OBJS = $(SRCS_C:%.c=%.release.o) $(SRCS_CC:%.cc=%.release.o) $(SRCS_CPP:%.cpp=%.release.o) $(SRCS_NASM:%.nasm=%.release.o)
 
diff --git a/build/lib.mk b/build/lib.mk
index 7b8c2cf..a4778d1 100644
--- a/build/lib.mk
+++ b/build/lib.mk
@@ -61,8 +61,6 @@
 
 LFLAGS  = -L$(LIBPATH)
 
-#@@@ OBJS = $(SRCS_C:%.c=%.o) $(SRCS_CC:%.cc=%.o) $(SRCS_CPP:%.cpp=%.o) $(SRCS_NASM:%.nasm=%.o)
-#@@@ OBJS = $(SRCS_C:%.c=%.$(BUILD).o) $(SRCS_CC:%.cc=%.$(BUILD).o) $(SRCS_CPP:%.cpp=%.$(BUILD).o) $(SRCS_NASM:%.nasm=%.$(BUILD).o)
 DEBUG_OBJS = $(SRCS_C:%.c=%.debug.o) $(SRCS_CC:%.cc=%.debug.o) $(SRCS_CPP:%.cpp=%.debug.o) $(SRCS_NASM:%.nasm=%.debug.o)
 RELEASE_OBJS = $(SRCS_C:%.c=%.release.o) $(SRCS_CC:%.cc=%.release.o) $(SRCS_CPP:%.cpp=%.release.o) $(SRCS_NASM:%.nasm=%.release.o)
 
diff --git a/configure.in b/configure.in
index 647a6f6..42e8c03 100644
--- a/configure.in
+++ b/configure.in
@@ -367,7 +367,7 @@
 CXXFLAGS="$OUR_CFLAGS_HEAD $CXXFLAGS"
 
 AM_CONFIG_HEADER(config.h)
-AH_TEMPLATE(FLAC__ALIGN_MALLOC_DATA,  [define if XXX])
+AH_TEMPLATE(FLAC__ALIGN_MALLOC_DATA,  [define to align allocated memory on 32-byte boundaries])
 AH_TEMPLATE(FLAC__CPU_IA32,  [define if building for ia32/i386])
 AH_TEMPLATE(FLAC__CPU_PPC,  [define if building for PowerPC])
 AH_TEMPLATE(FLAC__CPU_SPARC,  [define if building for SPARC])
diff --git a/doc/html/format.html b/doc/html/format.html
index 5d700c0..3c6361e 100644
--- a/doc/html/format.html
+++ b/doc/html/format.html
@@ -746,7 +746,7 @@
 				<A HREF="#cuesheet_track"><I>CUESHEET_TRACK</I></A>+
 			</TD>
 			<TD>
-				One or more tracks.  A CUESHEET block is required to have a lead-out track; it is always the last track in the CUESHEET.  For CD-DA, the lead-out track number must be 170 as specified by the Red Book (? @@@@).
+				One or more tracks.  A CUESHEET block is required to have a lead-out track; it is always the last track in the CUESHEET.  For CD-DA, the lead-out track number must be 170 as specified by the Red Book.
 			</TD>
 		</TR>
 	</TABLE>
@@ -774,7 +774,7 @@
 				&lt;8&gt;
 			</TD>
 			<TD>
-				Track number.  A track number of 0 is not allowed to avoid conflicting with the CD-DA spec, which reserves this for the lead-in. For CD-DA the number must be 1-99, or 170 for the lead-out (? @@@@).  It is not required but encouraged to start with track 1 and increase sequentially.  Track numbers must be unique within a CUESHEET.
+				Track number.  A track number of 0 is not allowed to avoid conflicting with the CD-DA spec, which reserves this for the lead-in. For CD-DA the number must be 1-99, or 170 for the lead-out.  It is not required but encouraged to start with track 1 and increase sequentially.  Track numbers must be unique within a CUESHEET.
 			</TD>
 		</TR>
 		<TR>
diff --git a/include/FLAC/format.h b/include/FLAC/format.h
index 52fec66..cedb6c2 100644
--- a/include/FLAC/format.h
+++ b/include/FLAC/format.h
@@ -728,6 +728,7 @@
  *
  *****************************************************************************/
 
+/* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */
 /** Tests that a sample rate is valid for FLAC.  Since the rules for valid
  *  sample rates are slightly complex, they are encapsulated in this function.
  *
@@ -738,6 +739,7 @@
  */
 FLAC_API FLAC__bool FLAC__format_sample_rate_is_valid(unsigned sample_rate);
 
+/* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */
 /** Check a seek table to see if it conforms to the FLAC specification.
  *  See the format specification for limits on the contents of the
  *  seek table.
@@ -750,6 +752,7 @@
  */
 FLAC_API FLAC__bool FLAC__format_seektable_is_legal(const FLAC__StreamMetadata_SeekTable *seek_table);
 
+/* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */
 /** Sort a seek table's seek points according to the format specification.
  *  This includes a "unique-ification" step to remove duplicates, i.e.
  *  seek points with identical \a sample_number values.  Duplicate seek
@@ -764,7 +767,7 @@
  */
 FLAC_API unsigned FLAC__format_seektable_sort(FLAC__StreamMetadata_SeekTable *seek_table);
 
-/* @@@@ add to unit tests */
+/* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */
 /** Check a cue sheet to see if it conforms to the FLAC specification.
  *  See the format specification for limits on the contents of the
  *  cue sheet.
diff --git a/src/libFLAC/metadata_iterators.c b/src/libFLAC/metadata_iterators.c
index 37913fa..048aa0e 100644
--- a/src/libFLAC/metadata_iterators.c
+++ b/src/libFLAC/metadata_iterators.c
@@ -1395,7 +1395,7 @@
 
 	b = buffer;
 
-	/* @@@ we are using hardcoded numbers for simplicity but we should
+	/* we are using hardcoded numbers for simplicity but we should
 	 * probably eventually write a bit-level unpacker and use the
 	 * _STREAMINFO_ constants.
 	 */
@@ -1468,7 +1468,7 @@
 	for(i = 0; i < block->num_points; i++) {
 		if(fread(buffer, 1, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH, file) != FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)
 			return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR;
-		/*@@@ some MAGIC NUMBERs here */
+		/* some MAGIC NUMBERs here */
 		block->points[i].sample_number = unpack_uint64_(buffer, 8);
 		block->points[i].stream_offset = unpack_uint64_(buffer+8, 8);
 		block->points[i].frame_samples = unpack_uint32_(buffer+16, 2);
@@ -1731,7 +1731,7 @@
 
 	FLAC__ASSERT(0 != file);
 
-	/* @@@ we are using hardcoded numbers for simplicity but we should
+	/* we are using hardcoded numbers for simplicity but we should
 	 * probably eventually write a bit-level packer and use the
 	 * _STREAMINFO_ constants.
 	 */
@@ -1800,7 +1800,7 @@
 	FLAC__ASSERT(0 != file);
 
 	for(i = 0; i < block->num_points; i++) {
-		/*@@@ some MAGIC NUMBERs here */
+		/* some MAGIC NUMBERs here */
 		pack_uint64_(block->points[i].sample_number, buffer, 8);
 		pack_uint64_(block->points[i].stream_offset, buffer+8, 8);
 		pack_uint32_(block->points[i].frame_samples, buffer+16, 2);
@@ -2274,7 +2274,7 @@
 		 * if code == -1, it means the last block was deleted so
 		 *   we have to set the is_last flag of the previous block
 		 */
-		/*@@@ MAGIC NUMBERs here; we know the is_last flag is the high bit of the byte at this location */
+		/* MAGIC NUMBERs here; we know the is_last flag is the high bit of the byte at this location */
 		FLAC__byte x;
 		if(0 != fseek(*tempfile, fixup_is_last_flag_offset, SEEK_SET)) {
 			cleanup_tempfile_(tempfile, tempfilename);
diff --git a/src/metaflac/main.c b/src/metaflac/main.c
index aa5635b..64ff446 100644
--- a/src/metaflac/main.c
+++ b/src/metaflac/main.c
@@ -16,11 +16,6 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
-/*@@@
-more powerful operations yet to add:
-	add a seektable, using same args as flac
-*/
-
 #if HAVE_CONFIG_H
 #  include <config.h>
 #endif