The second tip is concision, or succinctly stating ideas.

Professors should explain everything in detail, not be succinct and always tell students to go home and read their books.

To put it succinctly, I don't know, and I don't want to know.

This summary is too succinct; it needs further elaboration to make it understandable.

Why persist in writing essays if one has not even mastered the art of writing succinct sentences?

The epitaph engraved on the headstone was a meaningful, succinct poem.