这个提示是什么原因造成的呢？

滕小辉

KILL code number        Overlay number    Nearby statement number
" }5 X2 n; H# u  A/ ?   422                          1                         0
5 R3 S9 r! n* s! K0 [4 M! PKILL = 422.  
: y  H! \1 X$ j. V! K. X( m  PThe present statement is interpreted as a value assignment statement, and the preceding name is interpreted as a variable to which a value is being assigned.  The identification of this variable is interpreted as complete, and should now be followed by ":=",in the following format: variable_identification := expression