# Miscellaneous Commands

## Click on (F) from the main menu to get this menu

- (Q)uit This exits XPP first asking if you are sure.
- (P)rt info This prints info about the current simulation to the console. The equations, the numerical parameters, the initial data, boundary conditions and all parameters are printed.
- (W)rite set This creates a file with all of the info about the current numerics, etc as well as all of the currently highlighted graphics window. It is not meant to be readable by the user. It in some sense saves the current state of XPP and can be read in later.
- (R)ead set This reads a set that you have previously written. The files are very tightly connected to the current ODE file so you should not load a saved file from one equation for a different problem.
- (S)ave info This is like (P)rt info but saves the info to a file. It is human readable.
- (C)alculator This pops up a little window. Type formulae in the command line involving your variables and the results are displayed in the popup. Click on Quit or type Esc to exit.
- (A)uto This brings up the AUTO window if you have installed AUTO. S
- (E)dit At long last you can edit the equations from within XPP. Note that XPP is capable of understanding right-hand sides of up to 256 characters. However, the RHS editor will not accept anything longer than about 72 characters. This menu item presents a list of three options:
  - (R)HS Edit the right-hand sides of the ODEs IDEs, and auxiliary variables. If you are happy with the editing, then type TAB or click on OK. The program will parse the new equations and if they are syntactically correct, alter the corresponding equation. If there is an error, the you will be told of the offending right-hand-side and that will not be changed.
  - (F)unctions This lets you alter any user-defined functions. It is otherwise the same as the above.
  - (S)ave as This creates an ``ODE'' file based on the current parameter values, functions, and right-hand sides. You will be asked for a filename.
- (B)ell on/off This toggles the stupid noisy bell on and off.

# References

##

  Table of Contents
  Main Menu Items
  ODE Files and Examples
  Numerics Menu
  File Menu
  Freeze Menu
  AUTO Menu
  Data Browser
  I/O and Hardcopy
  XPP Basics
  Nonlinear ODEs
  Two-dimensions
  Three-dimensions and Beyond
  Phase Equations
  Chaos