Chapter one of the forms book (http://www.symfony-project.org/book/forms/1_1/en/01-Form-Creation) has the sentence:
sfForm makes it easy to manage the configuration and the life cycle of your forms.
appearing twice, first in a paragraph, then immediately in a highlighted callout. This might have been deliberate on the part of the author, but it makes for bad reading as currently formatted. I suggest keeping the text in the paragraph and deleting the callout, as this one is inconsistent with the other callouts on the page (all of which provide additional but tangential technical information).
