• Enter the values `by hand'
  This method is applicable to all process parameters, regardless of its type. You can use numeric values or, when appropriate, strings, and variable names of course. When entering strings you have to enclose them in double quotes to distinct them from variable names. Variable names in turn, may be used only when the variable has already been defined. If you reference other processes, you have to give their usual process identification, a combination of process number, followed by a 2 digit process type and a 2 digit child process number. Be careful when specifying processes this way.

• Drag processes from the process script
  Often it is much easier and safer, to use this technique (called drag and drop) for specifying references to other processes. It avoids the hazard of referencing non existing processes or incorrect process types. You still have to know something about the child process numbers of the referenced process. Because MegaEdit does not know which child of a process you wish to use, it usually assumes that you want to reference the first child, which is not always correct. Exceptions are the following process types, which are automagically referenced via their second child:
  
  • Normal vector,
  • Tangent vector,
  • Bivector,
  • Trivector,
  • Quintvector, and
  • B-spline polygon.
  You should check the child number before closing the dialog box to amke sure that you have built a connection to the right one.

  To drag a process, you have to position the pointer above the process script entry you want to reference. Then press and hold the middle mouse button and drag the process to the corresponding edit field in the parameter dialog. Release the mouse button to drop the reference into position.
  Voilá! The edit field now contains the identification of the process. If the process contained an implicit definition of a variable name, the syntax for reference of child processes by using parentheses has to be used (e.g. FARFIELD(1) references child 1 of the process named FARFIELD).
  When you drop a process onto the group number text field in the parameter dialog box, the group is taken from the process and placed into the text field.

• Processes with a variable number of arguments
  • Deleting parameters
    To delete the last child of a process which has a variable number of children (like the concat first layer process) you push the `Delete' button.
  • Adding parameters
    To add a new parameter after the existing children, you use the `Add' button. You can fill in the contents of the new child using one of the techniques described above.

The Info button offers additional informations about the parameters of the process that is beeing edited.

When you have completed all your edits, select the Update button in the parameter window to update the process script and to close the parameter dialog.

Check the result of your edit