diff --git a/bugs.md b/bugs.md
index 8a5da183a..e8a326e4c 100644
--- a/bugs.md
+++ b/bugs.md
@@ -11,8 +11,100 @@ The following is a known list of **BUGS and (mis)FEATURES** in IOCCC winners.
 Can you fix/improve them?  You are **VERY WELCOME** to try.
 Please submit your fixes fix a [GitHub pull request](https://github.com/ioccc-src/temp-test-ioccc/pulls).
 
-We will be happy to credit those who submit successful [GitHub pull requests](https://github.com/ioccc-src/temp-test-ioccc/pulls) in the entry's _README.md_.
+We will be happy to credit those who submit successful [GitHub pull
+requests](https://github.com/ioccc-src/temp-test-ioccc/pulls) in the entry's
+_README.md_ file. If you're a previous winner we will add a link to your winning
+entries in the file (if you're not we can add a link to your personal website if
+you have one if you like).
 
-## 1984/mullender
 
-This entry is likely to fail and/or dump core on any computer other.
+## Known bugs that are OK to fix
+
+### [2014/vik](2014/vik/prog.c) ([README.md](2014/vik/README.md))
+
+[Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) discovered a bug that
+shows itself in some cases (it works in others) when working on his [2020 Enigma
+machine](2020/ferguson2/prog.c) entry. See his
+[README.md](2020/ferguson2/README.md) for details (search for `vik` in the
+file).
+
+He provides a tip in testing the problem: it might help to use Cody's Enigma
+machine to find problems as it will allow you to verify what is correct and what
+is not. Again see his README.md for details.
+
+## Compiler specific requirements on type of args to main
+
+The following entries have a problem in that the args to main() are not of a
+specific type due. This shows itself in some compilers like clang. Looking at
+the source code of `clang` there is no way to override this requirement so these
+entries will fail to compile with clang.
+
+Please be aware that gcc under macOS is clang despite the fact it might appear
+to be gcc: no symlink and both gcc and clang exist.
+
+[Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) has fixed several but
+there are some he has not yet fixed and we welcome your help!
+
+A tip: in the older days args to main() not given a type were used as ints but
+when they're required to be `char **` this can cause a problem. In some cases
+Cody was able to use a `char *` inside main() (see
+[1989/tromp/tromp.c](1989/tromp/tromp.c) for an example). In other cases he was
+able to dereference the pointers to be used like an int. Some might require
+additional functions are added.
+
+For one-liners please keep the file one line!
+
+You may provide an alt version for the fix as well.
+
+
+### [1989/westley](1989/westley/westley.c) ([README.md](1989/westley/README.md))
+
+Although [Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) fixed this for
+some of the versions that are generated (see below tip) it will not work for
+all. He noted that trying to fix it in some cases causes a segfault and in other
+cases it fails to generate some of the files (others are okay) at all (empty
+files).
+
+He gives a tip on the problem: main() requires the second, third and fourth arg
+to be a `char **`. This didn't use to be the case and some compilers like gcc
+don't complain. He was able to get `main()` to be correct BUT a feature is that
+it uses ROT13 to decrypt the function `znva` to be main in generated files.
+Since that function does not have the correct types when converted to main() it
+fails to compile. But as he said changing the type causes either a segfault or
+files not generated at all. `ver1`, `ver2` and `ver3` are the problematic ones.
+The segfault happens when running the main program.
+
+This will not be a problem with gcc.
+
+## INABIAF (it's not a bug it's a feature)
+
+The following entries should NOT be touched: they are system specific by design
+but are noteworthy nonetheless.
+
+
+### [1984/mullender](1984/mullender/mullender.c) ([README.md](1984/mullender/README.md))
+
+This entry is likely to fail and/or dump core on any computer other than a
+Vax-11 or pdp-11. In 1984 machine dependent code was allowed.
+
+### [2019/endoh](2019/endoh/prog.c) ([README.md](2019/endoh/README.md))
+
+As a backtrace quine this entry is SUPPOSED to segfault so this should not be
+touched either.
+
+### [2020/ferguson1](2020/ferguson1/prog.c) ([README.md](2020/ferguson1/README.md))
+
+There are some things that might appear to be bugs but are actually features or
+things that are misinterpreted as bugs. See his
+[bugs.md](2020/ferguson1/bugs.md) and
+[troubleshooting.md](2020/ferguson1/troubleshooting.md) files for details.
+
+### ... more to be added later ...
+
+## Entries that can no longer compile
+
+.. entries to be added later ..
+
+## Entries that can compile but crash (sometimes or always)
+
+.. entries to be added later ..