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== Create an FSGD file ==

The FSGDF format uses tags to identify information, as shown below (this is just for example, and not something that can be made from the tutorial data):

{{{
  Example of a legal file:
  ------------------------- cut here ------------------
  GroupDescriptorFile 1
  Title MyTitle
  Class Class1 plus blue
  Class Class2 circle green
  Variables             Age  Weight   IQ
  Input subjid1 Class1   10    100   1000
  Input subjid2 Class2   20    200   2000
  #Input subjid3 Class2   20    200   2000
  DefaultVariable Age
  ------------------------- cut here ------------------
}}}

Notes:

 * The first line of the file must be "Group``Descriptor``File 1".
 * ''Title'' is not necessary. This will be used for display.
 * ''Class'' only needs the class name, the next two items, if present, will be used in the display.
 * The third ''Input'' tag will be treated as a comment, due to the ''#'' at the beginning of the line.
 * ''Default``Variable'' is the default variable for display.

General rules:

 * Tags are NOT case sensitive (for instance, 'Class' and 'CLASS' are the same tag).
 * Labels are case sensitive (for instance CLASS1 and Class1 are NOT the same label).
 * When multiple items appear on a line, they can be separated by any white space (i.e., blank or tab).
 * Any line where # appears as the first non-white space character is treated as a comment (ignored).
 * The ''Variables'' line should appear before the first Input line.
 * All Class lines should appear before the first Input line.
 * Variable label replications are not allowed.
 * Class label replications are not allowed.
 * Subject Id replications are not allowed.
 * If a class label is not used, a warning is printed out.
 * ''Default``Variable'' must be a member of the Variable list.
 * No error is generated if a tag does not match.
 * Empty lines are OK.
 * A class label can optionally be followed by a class marker.
 * A class marker can optionally be followed by a class color.<<BR>>