The birgado by the attention and quick answer. I did the tag use test, and it worked. I see that in other themes, this is not necessary, and the summary is automatic and configured in wordpress settings, reading. So, if I understand, in this fear this is not automatic. Tabém will not make any difference to the read settings or even the use of the summary field, just below the post, in the editing, right?
about 100% viewing, is the image, image on the page post, they are centered and not 100%