cutline

noun

1. In production, a hypothetical line that separates items that will be executed and publicized, versus items that will be cut.
2. A caption under a photograph, or more narrowly just the explanatory text block under a photograph, excluding the title.
3. In software testing, a hypothetical line that separates tests that will be performed from tests that may not be performed due to lack of time.
4. A linear cleared area through undeveloped land.

   “If you stop and get out, you will see a cutline for line-of-sight surveying.”

5. A line on the front wall, above which the ball must hit for a serve