To display the program type of an executable file without changing the file, specify only a file name, omitting an option.
MARKEXE filename.exe
Example
To view the program type of MYPROG.EXE, type the following:
MARKEXE myprog.exe
MARKEXE displays the type in a message that looks like this:
myprog.exe: OS/2 1.x, WINDOWCOMPAT, LFNS