Hi. I'm using the latest version of lime.

I am a novice user.

I use muliple choice type M. I have three answers:
For example, yes, no, I don't know

and I want e.g. "you don't know yourself" to pop up in the summary "you don't know yourself" after selecting "I don't know" - "Read" and when you choose "yes", that's great.

Hi, you obviously use the wrong type of question.
If you use type M, it will be possible to select "Yes" AND "No" at the same time.
You'd use a single punch question.

But I really do not know what you try to do.
Which summary?
Usually you do this by expression script.

Best you study the sample surveys.
There are some examples about this.
www.limesurvey.org/manual/Expression_Man...nager_sample_surveys

And, please, do not double post.
You asked the same question in the Spanish part at the same time.

Joffm