La Grande Guerre expliquée en images / Antoine Prost. (OCLC #868020225)

When you specify the number of non-filing characters for a title, you are not just saying how a title should be sorted, but also how it should be indexed. Specifically, any characters you skip will not be considered part of the title, or even the record.

For example, if you do a title search in OCLC for:

la grande guerre expliquee en images

it will return no results, because the title field’s second indicator says to skip the first three characters:

245 13 La Grande Guerre expliquée en images / ǂc Antoine Prost.

For more on what not to search for, check out my longer blog post.