Original: For example, the name 18.2 balkline, one of the more prominent balkline games, indicates that balklines are drawn 18 i distant from each rail, and only 2 counts are allowed in a balkspace before a ball must leave.
Simplified: So, for example, the name 18.2 balkline, tells us that balklines are drawn 18 i distant from each rail, and only two points are allowed in a balk space before a ball must leave that area.