Project Files (OPJ)

The Origin Project File is a convenient container for all of your data:

all child windows visible in the Origin workspace (workbooks, graphs, layout pages, plotted mathematical functions).
all child windows in hidden Project Explorer folders
all datasets -- both visible and hidden -- that are contained in child windows.
any loose datasets that are not associated with child windows.
LabTalk scripts associated with child windows (worksheet scripts, button objects, Set Values dialog boxes, scripts stored in the Workbook Script Panel) .
the contents of the Results Log.
the Command Window history.
X-Functions, data import filters, and Excel workbook files.
attached third-party file types.

File Extension	Description	Default Installation Location	Customized Files Saved to User Files Folder?
OPJ		ORIGIN.OPJ is installed to the Origin program folder. Sample OPJ files may be saved to various locations.	OPJ files can be saved anywhere. Set default Open and Save paths via the Open Path and Save Path info in the Options dialog box.