Click and drag the mouse from top to bottom, WITHIN the box below,
to select everything, then right-click and Copy (or press Ctrl+C).
In the forum, click "Post reply", and then right-click and Paste (or press Ctrl+V),
you will then have an image, linking to the photo page.
For a row of images, only copy the image, put two spaces after the previous one, and paste again.