baseline

noun:

1. A configuration of software, hardware, or a process that is established and documented as a point of reference.
2. A datum used as the basis for calculation or for comparison.
3. A line used as the basis for the alignment of glyphs.
4. A line that is a base for measurement or for construction.
5. The line at the farthest ends of the court indicating the boundary of the area of play.

verb:

1. To provide a baseline for measurement.
2. To play from the baseline.