The point of it…
This function helps you filter your listing. You may choose to relate the entries in a concordance or list of words (word-list, collocate list, etc.) with a set of specific words which interest you. For example, to mark all those words in your list which are function words, or all those which end in -ing. Those which match are marked with a tilde (~). With the entries marked, you can then choose to delete all the marked entries (or all the unmarked ones), or sort them according to whether they're marked or not.
How to do it
With a word-list loaded up using WordList, click in the column whose data you want to match up. This will usually be one showing words, not numbers. Then choose Compute | Matches.
The main Controller settings dialogue box appears.
Text File or Template
Choose now whether you want to filter by using a text file which contains all the words you're interested in (e.g. a plain text file of function words [not supplied]) or a template filter such as *ing (which checks every entry to see whether it contains a word ending in ing.).
To use a match list in a file, you first prepare a file, using Notepad or any plain text word processor, which specifies all the words you wish to match up. Separate each word using commas, or else place each one on a new line. You can use capital letters or lower-case as you prefer. You can use a semi-colon for comment lines. There is no limit to the number of words.
; Match list for test purposes.
If you choose a file, the Controller will then read it and inform you as to how many words there are in it. (There is no limit to the number of words but only the first 50 will be shown in the Controller.)
The current Tool then checks every entry in the selected column in your current list to see whether it matches either the template or one of the words in your plain text file. Those which do match are marked or deleted as appropriate for the Action requested (as in the example below where five matching entries were found, the action selected was delete entries which match and the match list included THE, IS and IT).
I answered No so you could see this result:
In the screenshot below, the action was find matches & mark them, and the match-list contained archaic forms like thou, thee, thy.
The marking can be removed using a menu option or by re-running the match-list function with remove match marking as the action.
You can obtain statistics of the matches, using the Summary Statistics menu option.