1-2-2 press break pdf
To snap the measurement to the endpoint of a line, select Snap To Endpoints
When Acrobat sends only the currently visible pages of a PDF to the memory buffer, the assistive technology has access to those pages onlyIt cannot go to another page until the next page is visible and Acrobat has sent the page information to the memory buffer
Therefore, if this option is selected, you must use the navigation features of Acrobat, not the features of the assistive technology, to navigate from page to page in the documentAlso set theDefault Page Layout option in preferences to Single Page if you choose to have Acrobat send only the currently visible pages to the assistive technologyBecause Acrobat sends page information about all visible pages, the assistive technology receives information about pages that may be only partially visible (such as the bottom of one page or the top of the next), as well as those pages that are completely visible
If you use a page display setting other than Single Page, such as Continuous, and then you display the next page, the technology may not correctly track which portion of a previous page it has already read aloudFor instructions on setting the default page layout to Single Page, see Preferences for viewing PDFs
This option corresponds to the Only Read The Currently Visible Pages option in the Accessibility Setup Assistant
Read The Entire Document This option can be best if you use a screen reader that has its own navigation and search tools and that is more familiar to you than the tools in AcrobatUse page thumbnails to jump to specific pages Page thumbnails provide miniature previews of document pages
You can use thumbnails in the Page Thumbnails panel to change the display of pages and to go to other pagesThe red page-view box in the page thumbnail indicates which area of the page appears
You can resize this box to change the zoom percentageTo display the Page Thumbnails panel, click the Page Thumbnails button or choose View > Show/ Hide > Navigation Panes > Page Thumbnails To jump to another page, click its thumbnail
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Source:adobe pdf reader