VFP Array Element Handling Gotcha

I just got bit in a minor way with the way that VFP handles array
elements.  Consider the following code:

   local twod(10,2)
   for i=1 to 10
      for j=1 to 2
         twod(i,j)=10*i+j
         endfor
      endfor
   ? twod(4,3)

     Note the array dimensions and the reference.  The reference is
treated as being the third element starting in row 4 with VFP not
checking against the declared dimension.  The reference is treated as
referring to twod(5,1), not as being an error.

     The docs do say that 2-D arrays can be accessed as 1-D.  The
implementation appears to be more general than that.  Forewarned is
forearmed and all that.

Sincerely,

Gene Wirchenko

Computerese Irregular Verb Conjugation:
     I have preferences.
     You have biases.
     He/She has prejudices.