I should know but it's been so long and can't find in help file (!) but can someone please remind me how to join points with missing data in a line plot when there is missing data...ie leave no gaps.
In the Page level "Plot Details" dialog from Format:Page menu (or F2), you can select the "Display" tab, then check the "Connect Line across Missing Data" check box. That's it, I think.
In LabTalk, you can set the Page object like: myGraph1!page.connect=1