Add 1994/horton/try scripts and article cited

The try.sh and try.alt.sh scripts correspond to the original entry and
the alt code (which is enhanced).

The PDF files might need a bit more explaining. The author wrote an
article in 'The USENIX Association Newsletter ;login: September /
October 1992 Vol. 17, No. 5' (the exact title from the PDF) called
'Using GraphTab'. I found the full newsletter in the Internet Wayback
Machine which is now added to the repo (okay: the newsletter as a PDF is
added to the repo, not the Internet Wayback Machine :-) ). But the pages
cited are 28-31 so I extracted (with macOS Preview app: File -> Print
option) the specific pages so one need not look at the full newsletter
if they do not wish to. It felt better to have the PDF rather than
images as it's easier to deal with what the right size is: the size is
there and one can zoom in or out as they see fit (whereas with images
different resolutions make it easier or harder to see what is in them).

thanks-for-help.md

@@ -1872,12 +1872,23 @@ that already existed, how many you had and how many were stolen.
 [Cody](#cody) fixed this to check that four args were specified. With the use of the C
 pre-processor macro and inclusion of `stdlib.h` in the Makefile the layout of the
 source is exactly the same column width and no additional lines were added. This
-was done during one of the times where this was changed to bug status, for
+was done during one of the times where this was changed to bug to fix status, for
 better or worse.
 
 Cody also fixed the Makefile which was causing alt code to be compiled when it
 shouldn't be.
 
+Cody also added the scripts [try.sh](/1994/horton/try.sh) and
+[try.alt.sh](/1994/horton/try.alt.sh).
+
+Finally he added the article (written by the entry's author) cited in the
+remarks: the full [USENIX Association Newsletter ;login: September / October
+1992 Vol. 17, No. 5](/1994/horton/login_sept92.pdf) and the pages cited as a
+shorter PDF file,
+[login_sept92-pp28-31.pdf](/1994/horton/login_sept92-pp28-31.pdf). The full
+newsletter was found on the Internet Wayback Machine and the article was
+extracted as a PDF in the macOS `Preview.app` (`File -> Print` feature).
+
 
 ## <a name="1994_ldb"></a>[1994/ldb](/1994/ldb/ldb.c) ([README.md](/1994/ldb/README.md]))