pdf-notes

Name trees:

	/Kids [references]
	/Limits [(min-name) (max-name)]

	/Names [(key1) val1 (key2) val2 ... (keyN) valN]
	/Limits [(key1) (keyN)]

Number trees are like name trees but:

	/Nums [key1 val1 ...]	instead of /Names
	/Limits [key1 keyN]

Destinations:

[page-object /XYZ left top zoom]
[page-object /Fit]
[page-object /FitV]
[page-object /FitH]
[page-object /FitR left bottom right top]
named dest
	-> either /Dests in document catalog (a dictionary)
	-> or via document name dictionary:
		catalog -> /Names -> /Dests -> name tree

## \pdfdest name{<name>} (xyz [zoom <mag>] | fitr <rule> | fitv ...)
##	-> fitb, fitbv, fitbh: bounding box of the page
## \pdfdestmargin=<dimen>

Actions: (dictionaries)

	/Type /Action		optional
	/S action-type
	/Next dict-or-array	chaining	

	/S /GoTo
	/D destination

	/S /URI
	/URI (uri)

	/S /Named
	/N /NextPage

Outline:

catalog -> /Outlines -> dictionary

	/Type /Outlines
	/First -> first top-level item
	/Last -> last top-level item
	/Count number-of-open-items-on-all-levels

item:

	/Title (string)
	/Parent -> parent item
	/Prev -> previous item
	/Next -> next item
	/First -> first child
	/Last -> last child
	/Count num-of-open-descendants
	/Dest name-string-or-array
	/A action-on-activate
	/C [r g b]		color
	/F flags		style flags (b0=italic, b1=bold)

## \pdfoutline [attr <text>] <action> [count <integer>] <text>
##	action:
##		- goto page N, goto name X
##		- user { ... }
##	count > 0: open subentries
##	count < 0: closed subentries

Page labels:

catalog -> /PageLabels -> number tree -> page label dict
(for each range, the number tree contains the first page number in the range)

	/Type /PageLabel	optional
	/S style		D=decimal, R=ROMAN, r=roman, A=upcase (A..Z, AA,BB..ZZ, ...), a=lowcase
				no style -> no numbers, only prefix
	/P (prefix)
	/St start-number	default=1

Annotations: (section 8.4, page 604)

page -> /Annots -> array of annotation dictionaries

	/Type /Annot		optional
	/Subtype xxx
	/Rect [rectangle]	location on page
	/Contents (string)
	/P -> page containing this annot
	/NM (optional annotation name)
	/M (datetime of last modification)
	/F flags		not interesting
	/AP -> appearance dict
	/AS /selected-appearance
	/Border [horiz-corner-radius vert-corner-radius width optional-dash-array]
	/BS -> border style dict	preferred
		/Type /Border
		/W width
		/S style		/S=solid /D=dashed /B=beveled etc.
		/D dash-array
	/C [gray / r g b / c m y k]

annotation subtypes:

	/Text			ikonka, vyvolava pop-up text
		/Name icon		(/Comment /Help apod.)
	/Link			link or action
		/A action	one of these
		/Dest (dest)
	/FreeText		text rendered inside page, possibly with callout
	/Line			usecka nebo kota
	/Highlight		zvyrazneny kus textu, vyvolava pop-up text

pdftex:
	\pdfannot [reserveobjnum | useobjnum <N>] [<rule-spec>] <raw-PDF>
				rule-spec describes annot size, default is all dimensions running
				(inherits dimensions of enclosing box)
	\pdflastannot		returns object number

	\pdfstartlink [<rule-spec>] [attr <text>] (<action> ::= user <user-action> | goto name{<destination>} | goto page <num> {/Fit})
	\pdfendlink
	\pdflastlink
	\pdflinkmargin=<dimen>

	\pdfstartthread [<rule>] [attr <text>] name{<name>}
	\pdfendthread

	\pdfpageresources{ /ExtGState << /key value ... >> }