<s>
AI	B-Application
is	O
a	O
computer	O
virus	O
which	O
infects	O
executable	O
files	O
.	O
</s>
<s>
The	O
virus	O
is	O
loaded	O
into	O
memory	O
by	O
running	O
an	O
infected	O
file	O
and	O
then	O
modifies	O
the	O
computer	O
's	O
run	B-Library
time	I-Library
operation	O
and	O
corrupts	O
program	O
and	O
overlay	O
files	O
.	O
</s>
<s>
It	O
does	O
n't	O
seem	O
to	O
work	O
with	O
all	O
executables	O
but	O
does	O
reliably	O
infect	O
standard	O
DOS	B-Device
files	O
.	O
</s>
