TEXT(Introduction  To Library 
     -------------------------------------------------
 
  The PHOENICS Input-File Library contains a collection of
  Q1 files which illustrate features of PHOENICS which may assist
  and interest users.
 
  Newcomers to PHOENICS are advised to load and execute cases
  which they find of interest, and then to make small changes to
  the input data, observing the consequent changes in the output.
 
  The library is divided into "core" and "option" sections. The
  input files of the core sections are loaded by the command
  load(case number). Input files from the options can be loaded by
  the same command, provided that the case number is preceded by:
 
      B, for the Body-fitted-coordinate option,
      C, for the extra Chemical reactions
      N, for the extra Numerical algorithms
      P, for the extra multi-Phase features
      Q, for the Quality-assurance and benchmark tests
      R, for the extra Radiation features
      S, for the solid-stress features
      T, for the extra Turbulence models
      W, for the tWo-phase option,
      Z, for the PLANT library
 
  However, only the case number is needed, when the loading is
  effected by the use of the SATELLITE top menu.
 
  Some PIL sequences appear in the libraries which are not
  complete Q1's. They are used as setting sequences which can be
  loaded into Q1's, rather as subroutines are called in other
  computer languages.
 
  These include:
  * case 20, which interprets the Q1 settings in plain English;
  * case 21, which clears the screen;
  * case 22, which provides a pause (case 13 does the same);
  * case 30, which loads in EXPERT with some commonly suitable
    settings;
  * case 31, which introduces some frequently-suitable residual-
    and print-out-control settings.
 
  load(20) can be entered without preliminary; but load(21) etc
  must be preceded by nowipe = t. Alternatively, a $ can be placed
  to the right of the ( bracket with the same effect.
 
  Use of the load(20) feature is especially recommended to those
  persons who are not sufficiently familiar with PIL to be able
  to be able to read a Q1 file fluently; and all users may find
  it convenient to have the significance of a Q1 file printed
  in plain English, for others to read, which is one of the
  options provided.