Number of lines in the post

Where you want the “Read more” click the ‘more’ button.

Blah blah blah
<—more—>
Blah blah blah

results in

Blah blah blah
(more…..)

Thanx alot,

The “more” button gave med <!–more–>

But anyway. Thanx alot =)

One other thing, how do I change the
“Read the rest of this entry ??” to my own language?

Edit: found it =)

See this info about the Quicktag Podz described:
https://codex.www.ads-software.com/Write_Post_SubPanel#Quicktags

And a different version of your question:
Codex FAQ Layout and Design, How do i show an excerpt or teaser…

And a technical piece about customizing:
https://codex.www.ads-software.com/Customizing_the_Read_More