A correction fluid is an opaque, white fluid applied to paper to mask errors in text. Once dried, it can be written over.

Correction fluid
Correction fluid
Correction fluid
Correction fluid compositions
Water-based universal correction fluid
Adolescent abuse of typewriter correction fluid
Inhalant abuse (typewriter correction fluid) in street children.
Cardiac effects of inhaled typewriter correction fluid
Death associated with the abuse of typewriter correction fluid
Fatality caused by inhalation of "liquid paper"correction fluid.
Myocardial injury following the intentional inhalation of typewriter correction fluid.
Sudden death in adolescents resulting from the inhalation of typewriter correction fluid
Additional deaths associated with the intentional inhalation of typewriter correction fluid