blackline
verb
- Compare two documents by displaying only what has changed between them
Wiktionary
noun
Etymology: From black + line; compare redline, greenline.
- A document indicating the differences between two versions of another document.
- A line of deliberately burned material created to stop the advance of a larger fire.
“A second squad uses drip torches to begin burning a 15- to 20-foot barrier or “blackline” inside the wetline.”
“The helicopter is used to burn blacklines when the relative humidity is above 50%, temperature is below 50 degrees F, and wind speed is less than 6 mph.”
verb
Etymology: From black + line; compare redline, greenline.
- To compare versions of (a document) by this method.