helpMessage =
 "Commands:\n" ++++
 "  r goal [A int] [S int] rule  -  refine goal with rule (A changes active" ++++
 "                                  formula in antecedent, S in succedent)" ++++
 "  i parametre term             -  instantiate parametre with term" ++++
 "  t goal int                   -  try to refine goal to depth int" ++++
 "  n sequent                    -  new sequent to prove"  ++++
 "  u node                       -  remove subtree node"   ++++
 "  s                            -  show subgoals"         ++++
 "  w                            -  show current proof tree" ++++
 "  a goal                       -  show rules applicable to goal" ++++
 "  c calculus                   -  change calculus into one of" ++++
 "                                  " ++ prCalculi                 ++++
 "  x file                       -  read axioms from file and write rules into" ++++
 "                                  file.rules.tex" ++++
 "  l [file]                     -  print current proof in LaTeX to file,"  ++++
 "                                  which is by default myproof.tex" ++++
 "  d [file]                     -  print current proof in natural deduction to"++++
 "                                  LaTeX file, which is by default" ++++
 "                                  mydeduction.tex (works only for G3i, G3ip)" ++++
 "  h [file]                     -  print history to file," ++++
 "                                  which is by default myhistory.txt" ++++
 "  ?                            -  print this help message" ++++
 "  m                            -  show the PESCA manual" ++++
 "  q                            -  write history in myhistory.txt and quit\n"
helpMessage =
 "Commands:\n" ++++
 "  r goal [A int] [S int] rule  -  refine goal with rule (A changes active" ++++
 "                                  formula in antecedent, S in succedent)" ++++
 "  i parametre term             -  instantiate parametre with term" ++++
 "  t goal int                   -  try to refine goal to depth int" ++++
 "  n sequent                    -  new sequent to prove"  ++++
 "  u node                       -  remove subtree node"   ++++
 "  s                            -  show subgoals"         ++++
 "  w                            -  show current proof tree" ++++
 "  a goal                       -  show rules applicable to goal" ++++
 "  c calculus                   -  change calculus into one of" ++++
 "                                  " ++ prCalculi                 ++++
 "  x file                       -  read axioms from file and write rules into" ++++
 "                                  file.rules.tex" ++++
 "  l [file]                     -  print current proof in LaTeX to file,"  ++++
 "                                  which is by default myproof.tex" ++++
 "  d [file]                     -  print current proof in natural deduction to"++++
 "                                  LaTeX file, which is by default" ++++
 "                                  mydeduction.tex (works only for G3i, G3ip)" ++++
 "  h [file]                     -  print history to file," ++++
 "                                  which is by default myhistory.txt" ++++
 "  ?                            -  print this help message" ++++
 "  m                            -  show the PESCA manual" ++++
 "  q                            -  write history in myhistory.txt and quit\n"
helpMessage =
 "Commands:\n" ++++
 "  r goal [A int] [S int] rule  -  refine goal with rule (A changes active" ++++
 "                                  formula in antecedent, S in succedent)" ++++
 "  i parametre term             -  instantiate parametre with term" ++++
 "  t goal int                   -  try to refine goal to depth int" ++++
 "  n sequent                    -  new sequent to prove"  ++++
 "  u node                       -  remove subtree node"   ++++
 "  s                            -  show subgoals"         ++++
 "  w                            -  show current proof tree" ++++
 "  a goal                       -  show rules applicable to goal" ++++
 "  c calculus                   -  change calculus into one of" ++++
 "                                  " ++ prCalculi                 ++++
 "  x file                       -  read axioms from file and write rules into" ++++
 "                                  file.rules.tex" ++++
 "  l [file]                     -  print current proof in LaTeX to file,"  ++++
 "                                  which is by default myproof.tex" ++++
 "  d [file]                     -  print current proof in natural deduction to"++++
 "                                  LaTeX file, which is by default" ++++
 "                                  mydeduction.tex (works only for G3i, G3ip)" ++++
 "  h [file]                     -  print history to file," ++++
 "                                  which is by default myhistory.txt" ++++
 "  ?                            -  print this help message" ++++
 "  m                            -  show the PESCA manual" ++++
 "  q                            -  write history in myhistory.txt and quit\n"