When you want to include a link to a topic in the IMatch Help System (https://www.photools.com/help/imatch/) into one of your posts, you can just copy/paste the link from the browser address bar or using the "Copy URL" command in your browser.
If you want to include a link to a specific section (sub-headline) of a longer topic you can use the Copy Deep Link feature. Just click on the link displayed on the right of each headline (level 2 and 3):
(https://www.photools.com/community/index.php?action=dlattach;topic=8324.0;attach=19919;image)
This copies a link into the clipboard which you can then paste right into your post.