Thanks for the quick response, and suggestion, will keep those in mind. One more thing, consider I modified the code piece to the below mentioned code, where I introduce a BEGIN block. How does that help ?....have noticed that in case of circular inheritence/dependency situations the below mentioned code works, rather than the previous one without BEGIN blocks.

package A;

use strict;

our (@ISA,@EXPORT);

BEGIN{
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(
        abc
        );
}
#................
# Some code here
#................

1;
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