diff --git a/doc/haikus b/doc/haikus
index cdcf1e52..1b0c5101 100644
--- a/doc/haikus
+++ b/doc/haikus
@@ -29,9 +29,6 @@ write a haiku about gnu parallel and the :::+  option
   Big fan of GNU parallel!
     -- lovelyloafers@reddit
 
-  I’m a big fan of GNU parallel!
-    -- Scott Cain @scottjcain@twitter
-
   gnu parallelが便利すぎてxargsの使い方忘れちゃった
     -- @mathbbQ@twitter ℕ@凍結解除手続き中
 
@@ -226,6 +223,9 @@ https://negfeedback.blogspot.com/2020/05/indispensable-command-line-tools.html
 
 === Used ===
 
+  I’m a big fan of GNU parallel!
+    -- Scott Cain @scottjcain@twitter
+
   GNU parallel ftw
     -- hostux.social/@rmpr @_paulmairo@twitter
     
diff --git a/packager/obs/home-tange/parallel/.osc/_files b/packager/obs/home-tange/parallel/.osc/_files
index 432074a7..5714cf73 100644
--- a/packager/obs/home-tange/parallel/.osc/_files
+++ b/packager/obs/home-tange/parallel/.osc/_files
@@ -1,7 +1,8 @@
-<directory name="parallel" rev="386" vrev="2" srcmd5="ab71393f2d517952d0ad97f852c9ed64">
+<directory name="parallel" rev="387" vrev="3" srcmd5="d4b27f35a15d2304a8b20e96ec794edd">
   <entry name="Makefile" md5="a165cdcca90c744dc5a5b17cde72ad8e" size="1182" mtime="1698101769" />
-  <entry name="PKGBUILD" md5="a09cd57a567ac2a751fb3caba2e8dda2" size="714" mtime="1713819623" />
-  <entry name="parallel-20240422.tar.bz2" md5="a2c843451c66cc5780e1e043176fc0c6" size="2564834" mtime="1713819624" />
+  <entry name="PKGBUILD" md5="5c9ffc0c528ac07959ab642181144752" size="714" mtime="1713820602" />
+  <entry name="parallel-20240422.tar.bz2" md5="cd00451ac96da8ca88e70ca9caca88ce" size="2564733" mtime="1713820602" />
   <entry name="parallel.spec" md5="e13d4c5cb25aa997ebea29d490a72551" size="6224" mtime="1713819624" />
   <entry name="parallel_20240422.dsc" md5="d2d1efe8ebfcd606261d7c13a2ad1c08" size="556" mtime="1713819624" />
+  <entry name="parallel_20240422.tar.gz" md5="4a5450078b018ab51531b2b40fea239d" size="2830066" mtime="1713820603" />
 </directory>
diff --git a/src/parallel_alternatives.pod b/src/parallel_alternatives.pod
index 3e0ce31c..a6168fad 100644
--- a/src/parallel_alternatives.pod
+++ b/src/parallel_alternatives.pod
@@ -4323,7 +4323,7 @@ ms/job it is slow.
 
 Output takes O(n^2) time for output of size n. 10 MB takes ~1 second,
 30 MB takes ~7 seconds, 100 MB takes ~60 seconds, 300 MB takes ~480
-seconds, 1000 GB takes
+seconds, 1000 MB takes ~10000 seconds.
 
 100 MB of output takes around 1 GB of RAM.
 
@@ -4372,6 +4372,51 @@ https://github.com/baalimago/repeater
 (Last checked: 2023-12)
 
 
+=head2 DIFFERENCES BETWEEN parallelize AND GNU Parallel
+
+Summary (see legend above):
+
+=over
+
+=item I1 - - - - - I7
+
+=item - - - - - M6
+
+=item O1 - O3 O4 O5 - O7 - - -
+
+=item E1 - - E4 - - -
+
+=item - - - - - - - - -
+
+=item - -
+
+=back
+
+B<parallelize> runs the full line as a command. If the command is not
+found, there is no warning.
+
+The output at most ~1000000 lines/s. If the lines are short this is
+quite slow. The lines can at most be 2047999 bytes long. Longer lines
+cause segfault.
+
+
+=head3 EXAMPLES
+
+simple.dat:
+
+  sleep 5
+  foo
+  cat alire.toml
+  loc src/parallelize.adb
+  sh loc src/*.ad?
+
+1$ bin/parallelize -v <simple.dat
+
+1$ parallel <simple.dat
+
+https://github.com/simonjwright/parallelize
+(Last checked: 2024-04)
+
 =head2 Todo
 
 https://github.com/justanhduc/task-spooler