A link filter is a set of filename substrings, each mapped to its appropriate layer name. There are a handful of pre-defined link filters built into the import module. Users may define additional filters as needed.
The program compares all image file names with all filename substrings in all enabled link filters. It then selects the “best” filter to use when autolinking. The “best” filter is the filter having the largest number of filename matches. However, more than half of the image files must match for a filter to be considered among the best.