The ornamental design for a file, as shown and described.
FIG. 1 is a front elevational view of a file including a file main body, a slidable frame at an edge of the file main body, and a plurality of clips under the slidable frame at clip engaging portions, showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a bottom plan view thereof; and
FIG. 7 is a front and top perspective view thereof.
FIG. 8 is a partially cross-sectional view thereof taken along the lines 8-8 and 8′-8′ shown in FIG. 2.
FIG. 9 is an enlarged front and top perspective view of a clip of the plurality of the clips thereof;
FIG. 10 is an enlarged rear and bottom perspective view of the clip thereof;
FIG. 11 is a top view of the file main body thereof without the slidable frame and the plurality of the clips, showing the clip engaging portions and folding lines; and,
FIG. 12 is a partially enlarged front and top perspective view of the edge of the main file body without the slidable frame and the clip, wherein the clip engaging portion is open along with a folding line.