Mauro Cherubini take note of three important principles when designing a presentation. I want to remember them:

[1] Legibility - distinctness that makes perception easy

[2] Readability - writing (print or handwriting) that can be easily read

[3] Clarity - free from obscurity and easy to understand; the comprehensibility of clear expression

Therefore the first level belong to the perception, the send to the presentation and the third to the content.

Thanks Mauro.

Read the original article at: Three quality of visual presentations at Mauro Cherubini’s moleskine