User Keys assignment and user flags.

  - -ed keys:

The other redefined keys on S/SX models are: 33.2 (XQ) and 33.3 (XNUM)

On G/GX models: 33.2 (XNUM) and 35.6 (XQ).

Users flags (* if cleared by VER, # if set by VER):

• 01: if set then verbose mode else quiet mode.
• 10: internal use, if set then ALGB performs integer arithmetic otherwise ALGB performs polynomial arithmetic
• # 11: internal use, cleared if a non-rational algebraic is found
• # 12: if clear then GCD returns always 1 ( no simplification in algebraics and no search of multiple roots of polynomials)
• # 13: if set then complex mode, else real mode (modifies the way of simplifying expressions with re, im and conj and the way of rooting polynomials)
• # 14: if set then searchs formal first order factors
• # 15: if set enables construction of integer fractions and square roots of integers
• * 16: internal use, if set then inverse Laplace transform
• * 17: cleared to use user data representation, set to use internal data representation.
• * 18: internally used by INT, if set then INT integrates a fraction of
• * 19: internally used by INT, if set then integration else partial fraction decomposition.
• * 20: internally used by DIAG, if set then force multiplication of lists to be matrice times polynomials in Horner scheme
• * 21: if set then recursive simplification for EXPA and TSIMP You should only modify flags 12,13,14,15,17 and 21.