Usage messages

In[2]:=

EquilibriaPlotPoints::usage = "EquilibriaPlotPoints is an option to
  Equilibria that sets the PlotPoints for the first contour plot that
  is used to generate seeds. To catch pairs of nearby equilibria it
  may be necessary to increase this.";
  
  Equilibria::usage = "Equilibria[funcs, {x, xmin, xmax},
  {y, ymin, ymax}, opts] returns the list of points where the
  funcs are 0. Options appropriate to FindMinimum may be used. Also
  a table of eigenvalues corresponding to the equilibrium points
  is printed.";
  
  EquilibriumPointColor::usage = "EquilibriumPointColor is an option
  to PhasePlot that sets the color of the equilibrium points.";
  
  EquilibriumFindingMethod::usage = "EquilibriumFindingMethod is an
  internal option to Equilibria to deal with nondifferentiable
  functions.";
  
  EquilibriaPrecisionGoal::usage = "EquilibriaPrecisionGoal is an
  option to Equilibria that eliminates duplicates with 10^-prec.";
  
  FindMinMethod::usage = "FindMinMethod is an internal function and option
  value for the case that equilibria are sought for a nondifferentiable
  function.";
  
  NullclineContourPlotPoints::usage = "NullclineContourPlotPoints is
  an option to NullclinePlot that controls the resolution of the
  contour lines.";
  
  NullclinePlot::usage =
  "NullclinePlot[{f1, f2}, {x, xmin, xmax}, {y, ymin, ymax}]
  produces the graphs of f1 = 0 and f2 = 0, along with a gray
  background that indicates the four possibilities for
  {Sign[f1], Sign[f2]} and red dots on the simultaneous
  roots (the equilibrium points). It works only on orbits for
  autonomous systems of two equations.";
  
  Nullclines::usage = "Nullclines is an option to NullclinePlot
  and PhasePlot that, when False, suppresses the nullclines.";
  
  NullclineShading::usage = "NullclineShading is an option to
  NullclinePlot and to PhasePlot that causes a coded gray
  background to show.";
  
  NullclineShadingMethod::usage = "NullclineShadingMethod is an
  option to NullclinePlot that controls the algorithm used to
  shade the regions. Possibilities are Automatic or SumOfSigns.";
  
  NullclineStyle::usage = "NullclineStyle is an option to NullclinePlot
  that sets the styles of the two nullclines. Thus it must be set to
  a pair, the first entry being a list of graphics primitives
  for the x-nullcline, and the second a list for the y-nullcline."; 
  
  SeedsOnly::usage = "SeedsOnly is an option to Equilibria that
  returns rough values of the points. It is faster and often good
  enough for visualization. The main point is that this allows
  the nullclines to be split up into pieces at the equilibrium points.";
  
  ShowEigenvalues::usage = "ShowEigenvalues is an option to Equilibria
  that causes a table of eignevalues to be displayed.";
  
  ShowEquilibria::usage = "ShowEquilibria is an option to
  NullclinePlot that causes the equilibrium points to be shown.";
  
  SumOfSigns::usage = "SumOfSigns is a value to the
  NullclineShadingMethod that forces a different, simpler, but less
  highly resolved, method to be sued for shading nullclines.";

If your output will be a sequence of graphs, select a display option.
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Up to Initialization code: The NullclinePlot package