I know that in the below statement the sproc disables replication on the database ReplTesting, but I want to know what the N charachter does infront of the parameters, as i have run it with and without the N and it seems to run ok either way.
exec
sp_replicationdboption @dbname = 'ReplTesting'
,
@optname = N'publish'
,
@value = N'false'