1.   Spelling checkers can be used to correct miss-spelt words and typing mistakes.

2.   Michael Blaese described studies in which T cells transformed with a retrovirus encoding adenosine deaminase were used to correct the crippling immunodeficiency produced by a lack of this enzyme.

3.   The direct standardisation method was used to correct for inadvertent imbalance of risk factors between the three treatment groups.

4.   The Ilizarov frame can be used to correct bone deformities, to regenerate bone, and to lengthen limbs.

5.   Although instant replay is not used to correct calls during a game, officiating executives at NFL headquarters use it to review the calls in every game.

6.   If a tooth is somewhat uneven, crowded, or longer than others, enamel shaping may be used to correct this.

7.   Meanwhile, Summit, based in Waltham, Mass., develops and manufactures the laser systems used to correct faulty vision.

8.   Martin said fines create a negative relationship with the companies, and he would rather have that money used to correct problems.

9.   The court has ruled that such programs can be used to correct proven patterns of discrimination, but has struck down specific numeric quotas in Colorado and Maryland.