http://www.senate.gov/reference/reference_index_subjects/Cloture_vrd.htm
"Cloture
The cloture rule–Rule 22–is the only formal procedure that Senate rules provide for breaking a filibuster. A filibuster is an attempt to block or delay Senate action on a bill or other matter. Under cloture, the Senate may limit consideration of a pending matter to 30 additional hours of debate."
"Cloture
The cloture rule–Rule 22–is the only formal procedure that Senate rules provide for breaking a filibuster. A filibuster is an attempt to block or delay Senate action on a bill or other matter. Under cloture, the Senate may limit consideration of a pending matter to 30 additional hours of debate."