The function <STRONG>new_field</STRONG> allocates a new field and initial-
izes it from the parameters given: height, width, row of
upper-left corner, column of upper-left corner, number
The function <STRONG>new_field</STRONG> allocates a new field and initial-
izes it from the parameters given: height, width, row of
upper-left corner, column of upper-left corner, number