The search settings button lets you choose these settings:

 

all there are (default)

The maximum is more than 2 billion lines.

 

limited to N

This feature is useful if you're doing a number of searches and want, say, 100 examples of each. The 100 entries will be the first 100 found in the texts you have selected. If you search for more than 1 search-word (e.g. book/paperback), you will get 100 of book and 100 of paperback.

 

random selection

This feature allows you to collect more than the target and reduce the set at random down to the target number. In this example Concord collects up to 160 entries then reduces them to 40. See also: reduce to N.

 

auto remove duplicates: removes any lines where the whole concordance entry matches another. (This can happen if you have a corpus where news stories get re-published in different editions by different newspapers.)

 

entries near each other

allows you to force Concord to skip hits which are too close to each other. If for example you set this to 0 or 1 and your text contains

... a lovely lovely day

then you will only get the first of these cases if searching for lovely. The default here is -1. (If you set it to 0 then you are only allowing one hit within any given word, e.g. a search for *l* will only hit each of the lovely words once although there are two ls in that word.)