These are the official release notes for 5.1.

There are some maior difference between 5.0 and 5.1

1. The word IN[] is changed into PP@@
   IN is abandoned.

2. -legacy- is no longer default in screen 5, let alone screen 1.
   Also removed from mywc

3. the beach doc changes are introduced.

4. documentation: library refs are stolen from gforth.

5. number theoretical words added and improved.
   (random number generator, (./.) etc. )

6. The marks at words no longer contain L1 L2
 indicative of long-forgotten properties.
 An added mark is WANT, which indicates a loadable extension.
 The following words have become loadable ( `` WANTED '' ), but are still
 documented in the main document, some of them ISO.
 Words in the main document are included in the regression test.
 SAVE-INPUT RESTORE-INPUT -->
 WORD FIND
 ASSEMBLER ;CODE (;CODE)
 ?LOADING ?EXEC
 L_>IN $!-BD

7. Some loadable extensions are so common that their test is included in
the regression test (they are not in the main document)
   D< D0< <= >=

8. A longstanding problem has been solved:
  handling of SHIFT-ARGS failed under linux.

9. An other longstanding annoyance has been removed.
With CASE-INSENSITIVE the assembler balked on a conflict
between r| and R| . r| (reverse order) has been renamed
into a| (abnormal order).
Unfortunately the conflict between S| and s| remains.

10. The system words FIRST LIMIT INIT PREV have names that are
likely to conflict with user programs. They have been renamed
into _FIRST _LIMIT _INIT _PREV.

11. PARSE and PARSE-WORD are standard. PARSE-WORD has the alias
 NAME that is present in the core.

12. struct endstruct have been replaced by class endclass
They are finally removed in 5.1 after being obsolete for 12
years.

13. The SET wordset has been obsoleted by the BAG wordset
for over 10 years. A BAG can be considered a set using
SET+ and SET-. So the SET screen is removed in 5.1.

14. Added
   :2 like : but supresses a redefinition message
   :F a forward definition
   :R a resolving definition

15.
  the elective screen has been cleaned up
  -scripting- has become elected.

16.
Changes and additions to QSORT
SORT-B sorts arrays of bytes with same length
SORT-X sorts arrays of cells.
SORT   is a QSORT with [low,high) range.

17.
CLS introduced.

Release notes for 5.3 , only lina 32 and 64 bits.


1. The build in other assemblers than fasm works again.
    Improvements to the makefile and the constant stealing.
2. readme's and man pages overhauled.
3. more system call numbers
4. multi tasking works on 64 bits, since other way to save HIP.
   task area's survive SAVE-SYSTEM
5. Multiple WANT 's on the same line.
6. -legacy- overhauled. REFILL works mostly as expected.
7. -trickycontrol- mixing of DO and WHILE control code.
8. Small improvements in number theoretical functions
9. turnkey works for fasm, suppress killing of sections.
10. Quotations : [: ;]
11. REGRESS : a regression test