What is the significates of a chancel rail or alter rail in a protestant church?

Alter rails, at least in Methodist churchs, are used to kneel at and pray, mostly during communion. Also, anyone wishing to kneel and pray may do so there as well, and it is considered sacred. Sometimes it is said to respresent the gates of Heaven, or to set apart the more sacred place from others. (The choir loft is usually behind it, and they are called the "Chancel Choir", along with where the clergy sit) They are a widely commen feature and are built even in new churches. Some that don't feature alter rails offer a portable rail with an attached kneeler for anyone who wishes to kneel to receive communion. God Bless :)