A window is active when it has been selected. When an action takes place in an active window which requires an additional dialog (e.g. the Windows Save dialog), two strategies are employed to position the new dialog.
1.(Windows) dialogs appear at the location where they were positioned and subsequently closed the last time they were used. ETS does not remembers these positions (for help if these turn out to be inaccessible, see here).
2.Important (ETS) dialogs always appear centered relative to the active window so that the workflow can be supported optimally, e.g. to place an input option directly in the center of the screen.
Which dialogs work according to what methods was determined through an ETS UI evaluation, including active feedback from customers.
The behavior of the ETS windows is stored in the workspaces themselves.