Sources here were recovered from the PDF files in the parent directory
and are stored in canonical Unicode UTF-8 format.  Utilities exist to
convert from this into formats accepted by various Algol 60 compilers
and formatting utilities, as well as HTML for online browsing.

I have not yet syntax-checked the sources against a compiler (or my
own formatter/syntax checker, algolps9).  To do so I'll need to export
them in a suitable ASCII format.

I will also have to handle calls to external procedures otherwise we
should expect a lot of undeclared procedure calls.  The Algol60 headers
given in the Statal document are unlikely to be supported by anything modern.


Note there is one file (41560) which uses a construct I have only
seen in Coral66 until now:

  r̲e̲a̲l̲ p̲r̲o̲c̲e̲d̲u̲r̲e̲ POWER(X)TO:(N); v̲a̲l̲u̲e̲ X, N;

This may not compile.  However rewriting it in standard Algol 60 will
not be a problem.  The call is standard:

  POWER(PHI(U + T) - PHI(U), N - 1)


So far I have only converted Statal I.  It took about 3 days.

These ecce macros were very helpful:

(r0 (v-/ /e-)0m)0 m-0 (rm,j)0 m-0 (f/"TF"/s/"IF"/)0 m-0 (f/—/s/-/)0 m-0
m-0(f/×/s/*/)0 m-0 (f/"("/s/{/)0 m-0 (f/")"/s/}/)0 m-0 (f/"/e (v/"/\clz)0 e)0

The remaining fixups were done by the script makehtml.sh

The OCR'ing by Tesseract was surprisingly better than I expected.

When Statal is done I need to revisit NUMAL:

  https://gtoal.com/languages/algol60/TESTS/NUMAL/SOURCES.a60-ul.html