FIG. 1 is a front perspective view of a marker showing my new design;
FIG. 2 is a front perspective view thereof with the caps separated;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof
FIG. 7 is a top view thereof; and,
FIG. 8 is a bottom view thereof.
The broken lines showing portions of the top and bottom in FIGS. 7 and 8 are included for the purpose of illustrating environment and form no part of the claimed design.