So in doing some research into quoted messages in replies I came across the hashtag feature in Groups IO. But before you read below, my understanding of the hashtag option is so that topics can be more easily followed. There IS an option that the admins can set to require hashtags in all subject lines.
A hashtag has an effect only if placed on the first message in a topic, and will be applied to all messages within the topic. (Note that although it is possible to add a hashtag to the subject of an emailed reply by editing the subject, this has no effect; the hashtag will be included in the subject line for members receiving messages via email, but will not be included in the subject line of the archived message or of any other messages within the topic.) This of course will group messages together and make it easier to follow the thread. However, I am guessing that there will be users of this forum that do not know about or understand hashtags. Please read below to understand more fully what this option would provide to the group.