# 0s = auto-create a new version on every update.
# -1s = never auto-create new versions.
# > 0s = auto-create a new version when older than the specified number of seconds.
# 0s = auto-create a new version on every update.
# -1s = never auto-create new versions.
# > 0s = auto-create a new version when older than the specified number of seconds.