void simple_import_and_fit()
{
	// Bring up file dialog for user to select the file.
	// Replace *.txt with your desired extension as needed.
	string strFile = GetOpenBox("*.txt");
	if( strFile.IsEmpty() )
	{
		out_str("No file was selected!");
		return;
	}

	// Create a new worksheet
	Worksheet wks;
	// If you wish to use a custom worksheet template, then specify the name of 
	// your template in place of Origin.OTW
	wks.Create("Origin.OTW");
	// Import the file into the worksheet using the current ASCIMP
	// (Import ASCII Options) stored in the worksheet.
	// You can edit the ASCIMP options from the GUI and save it back to
	// the worksheet and then save the worksheet as a custom template.
	// You can then create a new instance of your custom template and use it
	// to import the data next time.
	BOOL bRet = wks.ImportASCII(strFile);
	if( !bRet )
	{
		out_str("Failed to import file!");
		// Destroy newly created worksheet
		wks.Destroy();
		return;
	}
	
	// Create a default graph and plot all Y columns in the first layer
	// as a grouped plot.
	GraphPage gpg;
	// If you wish to use a custom graph template, then specify the name
	// of your template in place of Origin.OTP
	gpg.Create("Origin.OTP");
	// Point to the first layer in the graph
	// If you use a custom template that has multiple layers, you can
	// then declare separate layer objects for each layer and move 
	// data plots into various layers as desired
	GraphLayer gly = gpg.Layers(0);
	// plot the y column (column 2)
	Curve crv(wks, 1);
	gly.AddPlot(crv, IDM_PLOT_LINE);
	// rescale
	gly.Rescale();
	using NLSF = LabTalk.NLSF; // Point to the NLSF object
	NLSF.Init(); // Initialize the fitter
	NLSF.Func$ = "gaussamp"; // Assign fitting function
	NLSF.FitData$ = crv.GetName(); // Assign dataset name
	NLSF.Execute("parainit"); // Perform automatic parameter initialization
	NLSF.Fit(100); // Perform fit - up to 100 iterations
	NLSF.PasteParams("p"); // Paste fit results to graph 
}