□ □
[□] □
□ □ □
This is a useful , some would say essential , feature for version management . desc " file feature for MIME messages . Medications delivered via skin patches avoid liver metabolism , a necessary feature for drug molecules to metabolize easily , and allows for lower dosing of medications . The firm has a long history of developing advanced technology features for consumer electronic devices including wristwatches and PDAs . The biggest challenge has been configuring software , hardware and other features for security and certifying that the systems meet federal standards .