The ornamental design for a displayscreen supporting a transitional graphical user interface, as shown and described.
FIG. 1 is a front view of a display screen with transitional graphical user interface showing a first image in a sequence of a first embodiment according to the claimed design;
FIG. 2 is a front view of a second image thereof;
FIG. 3 is a front view of a display screen with transitional graphical user interface showing a first image in a sequence of a second embodiment according to the claimed design; and,
FIG. 4 is a front view of a second image thereof.
The outermost broken line illustrates the display screen and a boundary and the remaining broken lines illustrate portions of the transitional graphical user interface. None of the broken lines form part of the claimed design.
The appearance of the transitional image transitions between the images shown in FIGS. 1 and 2 in the first embodiment, and from FIGS. 3 and 4 in the second embodiment. The process or period in which an image transitions to another image forms no part of the claimed design.