Because of an editing error, an article yesterday about Comcast Corp.'s adjusted projections for its customer growth incorrectly reported that the company said it would add a total of 6 million subscribers in 2007 instead of the 6.5 million it had predicted earlier. Those figures, however, reflected what Comcast calls "revenue generating units," which represent subscriptions to each of the services it provides. Each subscriber could therefore represent multiple revenue generating units.

In a Dec. 6 story, officials from the Pennsylvania Department of Environmental Protection and the Pennsylvania Environmental Council described Montgomery County's adoption of a plan to reduce greenhouse gases emissions as the first in the state. They were referring to county action plans. They did not include Philadelphia's plan, adopted in April.