there a way of using GuiXT global variables across multiple
sessions. For example, if I'm in transaction X and I start a new
session for a transaction Y with /OY, can I use the variables I set
whilst in transaction X?
are distinct sets of variables, one for each session. But you
can pass using-parameters to InputScript started with a
/O...-command. If this is not enough, you could write a file and
read it in the next mode.