You can use either a Sequence File Global or a Station Global. If you don't ever change the value, it will be like a constant. Sequence File Globals are global to the sequence file opened and all sub sequences in it. To create one, on the sequence file window, click the down arrow next to Main Sequence. Select Sequence File Globals. On right hand pane, right click and select Insert Global, then Numer or String or whatever type you desire. Then double click on the newly created global and a window pops up that allows you to assign the value. The value remains constant unless you re-assign it. You can access the global by using FileGlobals.XXX, where XXX is the name of your global.
Station Globals are global to all sequence files on that station. Create by going to the menu bar and clicking on View - Station Globals. Again right click on the right hand pane to create one. Assign a value in the same manner as above. Access it by using StationGlobals.XXX. Once a global is assigned a value, and the sequence file is saved, the next time you open the file, that global will retain the value assigned. No need to assign again.
