SAVE DATA AS ... saves your ViSta data as a file on your computer so that it can be used again after you finish using ViSta.

Your data can be saved as one of several different types of files, as indicated by the choice of file extensions. 

VISTA DATA FILE (.VDF)
Normally you would save the data as a ViSta Data File (.VDF). This file is recognized by Windows as being a ViSta file, and when you double-click it within Windows it will run ViSta (if it isn't already running) and then appear on ViSta's workmap.

VISTA PROGRAM FILE (.VIS)
You can also save your data as a ViSta Program File (.VIS). This file can be edited to contain additional Lisp code to pre- or post-process the datafile. It will be loaded by ViSta for processing when it is double-clicked.

LISP FILE (.LSP)
If you save your data as a .LSP file it will be treated as a data file (just like a .VDF file) if it is saved into a directory structure containing at least one directory whose name is DATA, MYDATA, MY-DATA or DATALIBRARY. In this case, Vista will process it when it is double-clicked. Otherwise it will be treated as if it is a .VIS file, except that it will run the Lisp Editor when it is double-clicked.

TEXT FILE (.TXT)
Finally, you can export your data for use by other programs if you save it as a .TXT file. It can also be re-imported into ViSta via the IMPORT DATA (or OPEN DATA) menu items.
