CRISTAL Data Links:

An example of a CRISTAL data link application is the resource
database created for the National Park Service (NPS).  This Mt.
Rainier National Park (MORA) prototype consists of a database of
images and associated tabular information describing the park's
historic building resources.  A list of descriptive image titles
is entered into cell blocks in the spreadsheet, along with a key
code that can be used to specify search and sort criteria, and a
macro set for linking specified files to other data files.  An
initial macro execution presents the user with a menu of
operations that can be implemented for the database, such as
"Insert" and "Delete" records, "Search" for a record, and "Sort"
records.  If the Sort command is selected first, the list of
images is sorted by using the key code to position the image
titles in an ordered fashion according to user preference.  With
the Search command, the user specifies an image title as a search
parameter.  When a match between the search criteria and an image
in the library is found, the image file loaded from memory and
displayed on the graphics screen. 

<dfile47>   CRISTAL: Macro Language
<dfile50>   CRISTAL: Mt. Rainier Prototype
<cfile24>   CRISTAL Data Links