Add "Read more"

How have I do "Read more". I can fill form Summarty (Introtext) and tehn content, bud my site dont show perex, but only full text - artikel. I want have short prex (introtext) first, than "read more" and after click full text.

You will need to create a chunk for Ditto to use as a template for its output. The chunk would look something like this:

Then in your snippet call add &tpl=`chunkName`

I understand - i create chunk, but where i Give chunk? I add it to folder: manage resources - - new chunk and what then? I use it in somewhere in artikle (This is also the possible? ) or I add it to template? And where in template?

Tell Ditto to use it by adding &tpl=`chunkName` in the Ditto call.

I dont understant (sorry my English is not good)... new chunk, For example named "read-more" add somewhere to Ditto? Where exactly?