why dose a ! appear at the end?

why dose a ! appear at the end?
	modified:   16.exe
	modified:   fontgfx.exe
	modified:   fonttes0.exe
	modified:   maptest.exe
	modified:   palettec.exe
	modified:   pcxtest.exe
	modified:   src/fontgfx.c
	modified:   src/lib/modex16.c
	modified:   src/lib/modex16.h
	modified:   test.exe
	modified:   test2.exe