For AWS CLI configuration and credentials files how do you comment out lines in these files - I checked the documentation here http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html#cli-config-files but found nothing.
e.g.
~/.aws/credentials
[default]
aws_access_key_id = XXXXXXXXX
aws_secret_access_key = YYYYYYYY
[qa]
aws_access_key_id = AAAAAAAAA
aws_secret_access_key = BBBBBB
~/.aws/config
[default]
region = us-east-1
[profile qa]
region = us-west-2
[profile staging]
region = us-east-2