filename	IN:	Name of the file
	tag	IN:	Tag to be queried
	ref_list	OUT:	Buffer for the returned reference numbers
	label_list	OUT:	Buffer for the returned labels
	list_len	IN:	Size of the reference number list and the label list
	label_len	IN:	Maximum length allowed for a label
	start_pos	IN:	Starting position of the search

	Purpose	Returns a list of all reference numbers and labels (if labels exist) for a given tag.
	Return value	Returns the number of reference numbers found if successful and FAIL (or -1) otherwise.
	Description	Entries are returned from the start_pos entry up to the list_len entry.
		The list_len determines the number of available entries in the reference number and label lists, label_len is the maximum length allowed for a label, and start_pos tells which label to start reading for the given tag. (If start_pos is 1, for instance, all labels will be read; if start_pos is 4, all but the first 3 labels will be read.) The ref_list contains a list of reference numbers for all objects with a given tag. The label_list contains a corresponding list of labels, if any. If there is no label stored for a given object, the corresponding entry in label_list is an empty string.
		Taken together, the ref_list and label_list constitute a directory of all objects and their labels (where they exist) for a given tag. The label_list parameter can display all of the labels for a given tag. Or it can be searched to find the reference number of a data object with a certain label. Once the reference number for a given label is found, the corresponding data object can be accessed by invoking other HDF routines. Therefore, this routine provides a mechanism for the direct access to data objects in HDF files.

	FORTRAN	integer function dallist(filename, tag, ref_list, label_list, list_len, label_len, start_pos)
		character*(*) filename, label_list
		integer ref_list(*)
		integer list_len, label_len, start_pos