Adobe 22020737 Acrobat X Pro Manual - Page 461

Browse the internal PDF structure, In the Preflight window

Page 461 highlights

USING ACROBAT X PRO 455 Preflight Browse the internal PDF structure View the structure of a PDF, as defined by content streams and cos objects, in a tree array. (Content streams represent pages, form XObjects, Type 3 font characters, and the appearance of comments and form fields. Cos objects include such items as color space, images, and XObjects.) Check PDF syntax, view the results of a fixup, or determine the cause of a mismatch. Choose between five view modes that organize content streams in different ways. You cannot edit the PDF in the Internal PDF Structure window. Note: Do not confuse the internal structure with the logical structure in tagged PDFs that improves accessibility for lowor non-sighted readers. The internal structure is a superset of all objects in the document, including tags. Before you can browse the internal PDF structure, you must run a preflight check. 1 In the Preflight window, choose Browse Internal PDF Structure from the Options menu. The Internal PDF Structure window opens, showing a tree view of the document information and the document catalog (the root of the document's object hierarchy). 2 Expand each tree item to view the document structure. 3 Click the Page button to view the structure of each page. 4 To change how content streams appear in the tree view, select a view mode in the toolbar: Classic Displays the content stream as a sequence of page content operators. Expand the subtree for an operator to view its operands. This is the default view. Q Groups all operators in the content stream that belong to the same graphic state nesting level within a pair of the q/Q operators. Expand the subtree for a q/Q pair to view the operator and parameters inside. BMC Similar to Q, but arranges content streams by marked content (BMC/EMC) nesting levels. BT/ET Arranges content streams by text blocks, which are enclosed by BT and ET operators. Snippet Displays content streams as a series of snippets. A snippet is a contiguous group of objects that share the same graphic state. In this view, each snippet represents a type of drawing operation (for example, paint area) and its graphic state. Browse the internal font structure View the internal structure of embedded fonts in a PDF in greater detail than the preflight results with a graphical view that shows the outline and coordinates of each glyph. You can determine the source of various preflight problems, such as mismatches caused by inconsistent glyph widths. Before you can browse the internal font structure, you must run a preflight check. 1 In the Preflight window, choose Browse Internal Structure Of All Document Fonts from the Options menu. To view the structure of a single font, expand the Fonts entry in Results > Overview. Then select a font and choose Browse Internal Font Structure from the Options menu. 2 To view the glyph details, click any of the following buttons: Display Grid Shows the origin of the glyph's coordinate space, indicated by two green-colored orthogonal lines. Display Boxes Shows the area used by the selected glyph and the maximum area used by all glyphs using blue lines that coincide on the top and bottom. Display Filling Shows the areas of a filled glyph as medium gray. Last updated 10/11/2011

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455
USING ACROBAT X PRO
Preflight
Last updated 10/11/2011
Browse the internal PDF structure
View the structure of a PDF, as defined by content streams and cos objects, in a tree array. (
Content streams
represent
pages, form XObjects, Type 3 font characters, and the appearance of comments and form fields.
Cos objects
include
such items as color space, images, and XObjects.)
Check PDF syntax, view the results of a fixup, or determine the cause of a mismatch. Choose between five view modes
that organize content streams in different ways. You cannot edit the PDF in the Internal PDF Structure window.
Note:
Do not confuse the internal structure with the logical structure in tagged PDFs that improves accessibility for low-
or non-sighted readers. The internal structure is a superset of all objects in the document, including tags.
Before you can browse the internal PDF structure, you must run a preflight check.
1
In the Preflight window, choose Browse Internal PDF Structure from the Options menu.
The Internal PDF Structure window opens, showing a tree view of the document information and the document
catalog (the root of the document’s object hierarchy).
2
Expand each tree item to view the document structure.
3
Click the Page button
to view the structure of each page.
4
To change how content streams appear in the tree view, select a view mode in the toolbar:
Classic
Displays the content stream as a sequence of page content operators. Expand the subtree for an operator
to view its operands. This is the default view.
Q
Groups all operators in the content stream that belong to the same graphic state nesting level within a pair of the
q/Q operators. Expand the subtree for a q/Q pair to view the operator and parameters inside.
BMC
Similar to Q, but arranges content streams by marked content (BMC/EMC) nesting levels.
BT/ET
Arranges content streams by text blocks, which are enclosed by BT and ET operators.
Snippet
Displays content streams as a series of snippets. A
snippet
is a contiguous group of objects that share the
same graphic state. In this view, each snippet represents a type of drawing operation (for example, paint area) and its
graphic state.
Browse the internal font structure
View the internal structure of embedded fonts in a PDF in greater detail than the preflight results with a graphical view
that shows the outline and coordinates of each glyph. You can determine the source of various preflight problems, such
as mismatches caused by inconsistent glyph widths.
Before you can browse the internal font structure, you must run a preflight check.
1
In the Preflight window, choose Browse Internal Structure Of All Document Fonts from the Options menu.
To view the structure of a single font, expand the Fonts entry in Results > Overview. Then select a font and choose
Browse Internal Font Structure from the Options menu.
2
To view the glyph details, click any of the following buttons:
Display Grid
Shows the origin of the glyph’s coordinate space, indicated by two green-colored orthogonal lines.
Display Boxes
Shows the area used by the selected glyph and the maximum area used by all glyphs using blue lines
that coincide on the top and bottom.
Display Filling
Shows the areas of a filled glyph as medium gray.