What is MergeDifferences?

My version is 13.2.0 for Mac OS X ARM (64-bit) (November 18, 2022).

The symbol MergeDifferences appears in the auto-completion

but no documentation can be found or searched on the internet.

Is this symbol relic or experimental? How to use it?

• MergeDifferences is an option to SequenceAlignment. Autocompletion is not context-sensitive in this sense (although syntax highlighting is regarding unsupported/unlisted options to functions). It is probably a wise choice since options don't necessarily need to be syntactically associated with their function. The reason for lacking definition is that there's no separate documentation page for this option, which is not uncommon when options are used only by one function. Feb 8 at 4:37
• @kirma Thanks! The function SequenceAlignment is the first entry when searching MergeDifferences but I didn't look into it. You can write an answer and I'll accept it. Feb 8 at 4:45

MergeDifferences is an option to SequenceAlignment. Autocompletion is not context-sensitive in this sense (although syntax highlighting is regarding unsupported/unlisted options to functions). It is probably a wise choice since options don't necessarily need to be syntactically associated with their function. The reason for lacking definition is that there's no separate documentation page for this option, which is not uncommon when options are used only by one function.
Frankly ?(Defintion) and ?? (Information) could have some sort of indication for options like this that they're options associated with a function since separately documented options do have data available...