50806 + 415690 Bytes symbol space free

      0 Warning Errors
      0 Severe  Errors

F:\MASM>LINK 1;

Microsoft (R) Overlay Linker  Version 3.60
Copyright (C) Microsoft Corp 1983-1987.  All rights reserved.


LINK : warning L2029: Unresolved externals:



LOAD in file(s):
 1.OBJ(1.ASM)
SAVE in file(s):
 1.OBJ(1.ASM)

There were 2 errors detected     这里的两个错误我实在是不懂是什么意思``因为是新手```还请各位相助!谢谢!