diff --git a/cmuratori/hero/code/code121.hmml b/cmuratori/hero/code/code121.hmml
index b44b940..a5b5d44 100644
--- a/cmuratori/hero/code/code121.hmml
+++ b/cmuratori/hero/code/code121.hmml
@@ -10,7 +10,7 @@
 [42:14][Taking a look at the total throughput count]
 [43:18][Casey needs some more soya \[sic\] milk]
 [44:17][Could we do a load once, and grab out the two values that we needed?]
-[45:48][Day 121 Blackboard: Explanation of possible texel loading optimisation]
+[45:48][Explanation of possible texel loading optimisation][:blackboard]
 [50:32][Figuring out how the compiler is loading the texel data]
 [1:00:18][This is fine, then]
 [1:01:01][We multiply by TexturePitch and sizeof(uint32) four-wide manually, which is stupid]
@@ -19,35 +19,35 @@
 [1:04:07][Give the compiler the wide stuff so that it can see it as wide]
 [1:11:21][_mm_mul_epi32 does not do integer * integer]
 [1:13:43][Port pressure (we're back to InterIteration)]
-[1:17:46][Blackboard: Hyperthreading]
-[1:27:22][Blackboard: Designing how to break up the renderer for multithreading to ease pressure on the caches]
-[1:32:22][Blackboard: Divide the frame buffer into chunks that are sized appropriately for the cache]
-[1:39:55][Blackboard: The plan for setting up the renderer]
+[1:17:46][Hyperthreading][:blackboard]
+[1:27:22][Designing how to break up the renderer for multithreading to ease pressure on the caches][:blackboard]
+[1:32:22][Divide the frame buffer into chunks that are sized appropriately for the cache][:blackboard]
+[1:39:55][The plan for setting up the renderer][:blackboard]
 [1:40:47][Implementation of interleaved scanlines, in readiness for hyperthreading]
-[1:46:36][Blackboard: The logic of interleaved scanlines]
+[1:46:36][The logic of interleaved scanlines][:blackboard]
 [1:52:37][Updating compiler directives for folks who use LLVM]
 [1:55:20][Implementation of frame buffer divisions, in readiness for multi-core processing]
-[2:05:30][Go to Disassembly of DrawRectangleSlowly in order to diagnose bogus cycle count]
+[2:05:30][Go to Disassembly of DrawRectangleQuickly() in order to diagnose bogus cycle count]
 [2:10:04][Frame buffer divisions, continued]
 [2:20:50][Introduce GetClampedRectArea]
 [2:22:12][Problematic thing: Our convention for rectangles before was that they did not include their final value]
-[2:27:33][Fix the cycle counter for DrawRectangleSlowly again]
+[2:27:33][Fix the cycle counter for DrawRectangleQuickly() again]
 [2:29:42][A shortcut didn't work out.  (!quote 297 + !quote 298)]
 [2:30:56][Loft FillRect above the loop]
 [2:36:34][Introduce PixelPxRow in order to keep PixelPx as a wide value rather than having to set it each time]
 [2:39:50][Check IACA for performance difference and revert to setting PixelPx each time through the loop]
 [2:43:28][Shuffle calculations around to figure out how the performance is affected, for good or ill]
-[2:51:17][Blackboard: Thinking about that alignment problem]
+[2:51:17][Thinking about that alignment problem][:blackboard]
 [2:55:58][Align MinX and MaxX]
 [3:00:18][Microsoft Visual Studio 2013 has stopped working]
 [3:02:03][Dancing trees]
 [3:03:03][Change our loads and stores to no longer be unaligned]
 [3:04:05][Assess performance difference and revert back to the unaligned load and store instructions]
 [3:05:12][Make sure that we actually always fill the real clip region and not write outside the clip region]
-[3:07:10][Blackboard: Our options for filling the pixels]
+[3:07:10][Our options for filling the pixels][:blackboard]
 [3:09:12][Implementation of alignment to the ending edge]
 [3:16:48][Clip the leading edge]
-[3:19:41][Blackboard: ClipMask]
+[3:19:41][ClipMask][:blackboard]
 [3:21:33][Try setting StartupClipMask by using _mm_srli_si128]
 [3:22:28][// TODO(casey): This is stupid.]
 [3:26:10][Early-out the FillRect tests]