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+.nr LL 6.5i
+.nr PD 0.1i
+.nr HM 1.2i
+.nr FM 1.0i
+.nr PO 1.0i
+.nh
+.LP
+\ 
+.sp 12
+.PP
+.TL
+\fB\s+9PEX Protocol Specification\s-9\fP
+.sp 2
+.AU
+Version 5.1
+
+31-August-1992
+	
+.nf
+.sp 0.4i
+.ce
+\fBPEX Document Editor\fP
+.ta 1.5i 2.8i 4.6i
+.sp 0.05i
+	\fRPaula Womack\fP	\fIDigital Equipment Corp.	December,1991 to present\fP
+	\fRJeffrey Friedberg\fP	\fIDigital Equipment Corp.	September,1990 to December,1991\fP
+	\fRSally C. Barry\fP	\fIDigital Equipment Corp.	April,1990 to September,1990\fP
+	\fRRandi J. Rost\fP	\fIDigital Equipment Corp.	June,1987 to April,1990\fP
+.nf
+.sp 0.4i
+.ce
+\fBPEX Chief Architect\fP
+.ta 1.5i 2.8i 4.6i
+.sp 0.05i
+	\fRCheryl Huntington\fP	\fISun Microsystems	September,1991 to present\fP
+.nf
+.sp 0.4i
+.ce
+\fBPEX Issues Librarian\fP
+.ta 1.5i 2.8i 4.6i
+.sp 0.05i
+	\fRKarl Schultz\fP	\fIIBM	September,1991 to present\fP
+.nf
+.sp 0.4i
+.ce
+\fBPEX Secretary\fP
+.ta 1.5i 2.8i 4.6i
+.sp 0.05i
+	\fRJeff Stevenson\fP	\fIHewlett-Packard Company	September,1991 to present\fP
+.sp 0.3i
+.ta
+.bp 1
+\ 
+.LP
+.sp 12
+.ps 9
+.nr PS 9
+.vs 10
+.nr VS 10
+.sp 24
+.LP
+.nf
+.ce 2
+Copyright \(co 1988, 1989, 1990, 1991, 1992 X Consortium
+.LP
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the ``Software''), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+.LP
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+.LP
+THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+.LP
+Except as contained in this notice, the name of the X Consortium shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from the X Consortium.
+.bp 1
+.nr Pg 3		\" starting page number of toc
+.\" This header provides macro definitions and register assignments
+.\" for creating a table of contents.
+.\"
+.\" 	Number Registers which are not commented in the code itself:
+.\"		Lv  "level" -- the level of the entry
+.\"		Lc  "level change" -- amount extra space for changeing levels
+.\" The commented lines can be altered to change the format in the
+.\" manner described in the comments
+.\"
+.\" 				--  Doug Kraft, April, 1985
+.\"
+.\" *****  The next 2 lines are dependentant upon the mu macro package  *****
+.\" *****  and should be eliminated or changed if this in not desired.  *****
+.\"
+.LP
+\ 
+.\" ***** hack to get roman numerals in toc footer (JDF 10/90)
+.\"
+.\" Apparently, just setting the page register % to roman format
+.\" doesn't work.  It seems the value of a roman % in an "if" expression
+.\" always returns zero (troff bug?).  This behavior breaks -ms when
+.\" it tests % during header and footer printing.  So, instead of reformatting %,
+.\" we create a private roman format register Pg that will be set to % at Bg and Ed.
+.\" We might just miss a page change but, hey, this is a hack.
+.\" To start at a page other than 1, set the Pg register to the start page
+.\" number prior to sourcing this file.
+.\"
+.if !\n(Pg .nr Pg 1	\" assume start page of 1 if not set by user 
+.nr % \n(Pg 1		\" force real page number to user start number
+.af Pg i		\" format private count to small roman i, ii, iii, iv ...
+.EH ''   ''		\" no even header
+.OH ''   ''		\" no odd header
+.EF '' \\\\n(Pg ''	\" print roman count in even footer
+.OF '' \\\\n(Pg ''	\" print roman count in odd footer
+.\"
+.\" *****  invoke this at end to make sure you end up on a even page (JDF)
+.de Pe
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+.in 0i
+.ll \n(LLu
+.nr Pg \\n%
+.LP
+\\ 
+.if o \{\
+.  bp
+.  nr Pg \\n%
+\\ 
+.\}
+.nr Pg \\n%
+..
+.\"
+.\" *****  these global variable can only be set here *****
+.nr Ll \n(.lu     	\" line length
+.nr Xs 0.0i		\" extra space between all content entries
+.nr Nl 0.5v		\" extra space when entry level changes in troff
+.if n .nr Nl 1v		\" extra space when entry level changes in nroff
+.nr Lw 0.6i		\" extra distance to line wrap on left
+.nr Rw 0.6i		\" space between end of entry line and page number entry
+.nr Ll \n(Llu-\n(Rwu
+.ll \n(Llu
+.af p# 1		\" assign format to entry page number
+.\" *****  the following macros set level specific variables  *****
+.\"        level 1 
+.de l1
+.ne 6			\" space needed to end of page
+.ps 11			\" point size
+.vs 15			\" vertical spacing
+.ft B			\" font
+.in 0			\" indent
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+..
+.\"        level 2 
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+.in 0			\" indent
+.if t .nr Sp 0.5v	\" extra space before this level entry
+.if n .nr Sp 1v
+..
+.\"        level 3 
+.de l3
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+.ps 10			\" point size
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+.ft R			\" font
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+..
+.\"        level 4 
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+..
+.\"        level 5 
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+.ps 10			\" point size
+.vs 12			\" vertical spacing
+.ft R			\" font
+.in 0.35i		\" indent
+.nr Sp 0		\" extra space before this level entry
+..
+.\"        level 6 
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+.ps 10			\" point size
+.vs 12			\" vertical spacing
+.ft R			\" font
+.in 1.35i		\" indent
+.nr Sp 0		\" extra space before this level entry
+..
+.\"	   levels 7-9 = level 6
+.de l7
+.l6
+..
+.de l8
+.l6
+..
+.de l9
+.l6
+..
+.\" *****  Begin contents entry  *****
+.de Bg
+.nr Pg \\n%		\" page format hack (jdf)
+.l\\$1
+.ie \\$1=\\n(Lv .nr Lc 0
+.el .nr Lc \\n(Nlu
+.nr Lv \\$1
+.sp (\\n(Spu+\\n(Xsu+\\n(Lcu)u
+.in +\\n(Lwu
+.ti -\\n(Lwu
+.nr T1 \\n(Llu-\\n(.iu+0.2i
+.nr T2 \\n(Llu+\\n(Rwu-\\n(.iu
+.ta \\n(T1u \\n(T2uR
+.mk V1 \\n(nl
+..
+.\" ***** End Contents Entry *****
+.de Ed
+.nr Pg \\n%		\" page format hack (jdf)
+.mk V2
+\kH
+.sp -1
+.if \\n(.$ .if \\n(Lv>1 \{\
+.				\" NOTE: a page number is printed only if
+.				\" the page number in not 0 and the level
+.				\" is 2 or greater
+.	ie \\n(.$=1 .ds Pn \\$1
+.	el .ds Pn \\$1-\\$2
+.	tc .
+.	nf
+.	ie \\n(V1=\\n(V2 .nr Mv \\n(.n-\\n(Lw
+.	el .nr Mv \\n(.n
+.	sp |\\n(V2u
+\\0\h'\\n(Mvu'\t\kH
+.	tc
+.	sp |\\n(V2u
+\h'\\nHu'\t\\*(Pn
+.	fi
+.\}
+.br
+.ne 0
+.if \\n(.t<2.5v .bp
+..
+.\" This is the end of the header.  Your table of contents data starts
+.\" immediately below this line.
+.Bg 1
+PEX Protocol Specification
+.Ed 1
+.Bg 1
+1. Acknowledgements
+.Ed 1
+.Bg 1
+2. PEX Protocol Specification
+.Ed 2
+.Bg 2
+2.1. Request Processing
+.Ed 2
+.Bg 2
+2.2. Protocol Format
+.Ed 2
+.Bg 3
+2.2.1. Request Format
+.Ed 2
+.Bg 3
+2.2.2. Reply Format
+.Ed 2
+.Bg 3
+2.2.3. Error Format
+.Ed 2
+.Bg 3
+2.2.4. Event Format
+.Ed 3
+.Bg 2
+2.3. Syntax
+.Ed 4
+.Bg 2
+2.4. Naming Conventions
+.Ed 4
+.Bg 2
+2.5. Common Types
+.Ed 5
+.Bg 3
+2.5.1. LISTofFOO
+.Ed 5
+.Bg 3
+2.5.2. BITMASK and LISTofVALUE
+.Ed 5
+.Bg 3
+2.5.3. Floating Point Format - FLOAT
+.Ed 5
+.Bg 3
+2.5.4. Colors
+.Ed 5
+.Bg 3
+2.5.5. Element Types
+.Ed 5
+.Bg 3
+2.5.6. Types
+.Ed 6
+.Bg 3
+2.5.7. Errors
+.Ed 11
+.Bg 2
+2.6. Events
+.Ed 11
+.Bg 2
+2.7. Padding
+.Ed 12
+.Bg 2
+2.8. Extension Information
+.Ed 13
+.Bg 3
+2.8.1. Get Extension Information
+.Ed 13
+.Bg 3
+2.8.2. Get Enumerated Type Information
+.Ed 14
+.Bg 3
+2.8.3. Get Implementation-Dependent Constants
+.Ed 28
+.Bg 3
+2.8.4. Match Renderer Targets
+.Ed 31
+.Bg 3
+2.8.5. Escape
+.Ed 31
+.Bg 3
+2.8.6. Escape With Reply
+.Ed 32
+.Bg 1
+3. Output Commands
+.Ed 33
+.Bg 2
+3.1. Data Formats
+.Ed 33
+.Bg 2
+3.2. Errors
+.Ed 33
+.Bg 3
+3.2.1. FloatingPointFormat Errors
+.Ed 33
+.Bg 3
+3.2.2. ColorType Errors
+.Ed 34
+.Bg 3
+3.2.3. Length Errors
+.Ed 34
+.Bg 3
+3.2.4. OutputCommand Errors
+.Ed 34
+.Bg 2
+3.3. Output Command Descriptions
+.Ed 34
+.Bg 3
+Marker type
+.Ed 35
+.Bg 3
+Marker scale
+.Ed 35
+.Bg 3
+Marker color index
+.Ed 35
+.Bg 3
+Marker color
+.Ed 35
+.Bg 3
+Marker bundle index
+.Ed 35
+.Bg 3
+Text font index
+.Ed 35
+.Bg 3
+Text precision
+.Ed 35
+.Bg 3
+Character expansion
+.Ed 36
+.Bg 3
+Character spacing
+.Ed 36
+.Bg 3
+Text color index
+.Ed 36
+.Bg 3
+Text color
+.Ed 36
+.Bg 3
+Character height
+.Ed 36
+.Bg 3
+Character up vector
+.Ed 36
+.Bg 3
+Text path
+.Ed 37
+.Bg 3
+Text alignment
+.Ed 37
+.Bg 3
+Annotation text height
+.Ed 37
+.Bg 3
+Annotation text up vector
+.Ed 37
+.Bg 3
+Annotation text path
+.Ed 37
+.Bg 3
+Annotation text alignment
+.Ed 37
+.Bg 3
+Annotation text style
+.Ed 37
+.Bg 3
+Text bundle index
+.Ed 37
+.Bg 3
+Line type
+.Ed 38
+.Bg 3
+Line width
+.Ed 38
+.Bg 3
+Line color index
+.Ed 38
+.Bg 3
+Line color
+.Ed 38
+.Bg 3
+Curve approximation
+.Ed 38
+.Bg 3
+Polyline interpolation method
+.Ed 38
+.Bg 3
+Line bundle index
+.Ed 38
+.Bg 3
+Surface interior style
+.Ed 39
+.Bg 3
+Surface interior style index
+.Ed 39
+.Bg 3
+Surface color index
+.Ed 39
+.Bg 3
+Surface color
+.Ed 39
+.Bg 3
+Surface reflection attributes
+.Ed 39
+.Bg 3
+Surface reflection model
+.Ed 39
+.Bg 3
+Surface interpolation method
+.Ed 39
+.Bg 3
+Backface surface interior style
+.Ed 40
+.Bg 3
+Backface surface interior style index
+.Ed 40
+.Bg 3
+Backface surface color index
+.Ed 40
+.Bg 3
+Backface surface color
+.Ed 40
+.Bg 3
+Backface surface reflection attributes
+.Ed 40
+.Bg 3
+Backface surface reflection model
+.Ed 40
+.Bg 3
+Backface surface interpolation method
+.Ed 41
+.Bg 3
+Surface approximation
+.Ed 41
+.Bg 3
+Facet culling mode
+.Ed 41
+.Bg 3
+Facet distinguish flag
+.Ed 41
+.Bg 3
+Pattern size
+.Ed 41
+.Bg 3
+Pattern reference point
+.Ed 41
+.Bg 3
+Pattern reference point and vectors
+.Ed 41
+.Bg 3
+Interior bundle index
+.Ed 41
+.Bg 3
+Surface edge flag
+.Ed 42
+.Bg 3
+Surface edge type
+.Ed 42
+.Bg 3
+Surface edge width
+.Ed 42
+.Bg 3
+Surface edge color index
+.Ed 42
+.Bg 3
+Surface edge color
+.Ed 42
+.Bg 3
+Edge bundle index
+.Ed 42
+.Bg 3
+Set individual ASF
+.Ed 42
+.Bg 3
+Local transform 3D
+.Ed 43
+.Bg 3
+Local transform 2D
+.Ed 43
+.Bg 3
+Global transform 3D
+.Ed 44
+.Bg 3
+Global transform 2D
+.Ed 44
+.Bg 3
+Model clip
+.Ed 44
+.Bg 3
+Set model clip volume 3D
+.Ed 44
+.Bg 3
+Set model clip volume 2D
+.Ed 44
+.Bg 3
+Restore model clip volume
+.Ed 45
+.Bg 3
+View index
+.Ed 45
+.Bg 3
+Light source state
+.Ed 45
+.Bg 3
+Depth cue index
+.Ed 45
+.Bg 3
+Pick ID       
+.Ed 45
+.Bg 3
+HLHSR identifier
+.Ed 45
+.Bg 3
+Color approximation index
+.Ed 45
+.Bg 3
+Rendering color model
+.Ed 46
+.Bg 3
+Parametric surface characteristics
+.Ed 46
+.Bg 3
+Add names to name set
+.Ed 46
+.Bg 3
+Remove names from name set
+.Ed 46
+.Bg 3
+Execute structure
+.Ed 46
+.Bg 3
+Label
+.Ed 47
+.Bg 3
+Application data
+.Ed 47
+.Bg 3
+GSE
+.Ed 47
+.Bg 3
+Marker 3D
+.Ed 47
+.Bg 3
+Marker 2D
+.Ed 47
+.Bg 3
+Text 3D
+.Ed 47
+.Bg 3
+Text 2D
+.Ed 48
+.Bg 3
+Annotation text 3D
+.Ed 48
+.Bg 3
+Annotation text 2D
+.Ed 49
+.Bg 3
+Polyline 3D
+.Ed 49
+.Bg 3
+Polyline 2D
+.Ed 50
+.Bg 3
+Polyline set 3D with data
+.Ed 50
+.Bg 3
+Non-uniform B-spline curve
+.Ed 50
+.Bg 3
+Fill area 3D
+.Ed 51
+.Bg 3
+Fill area 2D
+.Ed 52
+.Bg 3
+Fill area 3D with data
+.Ed 52
+.Bg 3
+Fill area set 3D
+.Ed 53
+.Bg 3
+Fill area set 2D
+.Ed 53
+.Bg 3
+Fill area set 3D with data
+.Ed 54
+.Bg 3
+Triangle strip
+.Ed 55
+.Bg 3
+Quadrilateral mesh
+.Ed 55
+.Bg 3
+Set of fill area sets
+.Ed 57
+.Bg 3
+Non-uniform B-spline surface
+.Ed 59
+.Bg 3
+Cell array 3D
+.Ed 60
+.Bg 3
+Cell array 2D
+.Ed 60
+.Bg 3
+Extended cell array 3D
+.Ed 61
+.Bg 3
+GDP 3D
+.Ed 61
+.Bg 3
+GDP 2D
+.Ed 61
+.Bg 3
+Noop
+.Ed 61
+.Bg 1
+4. Lookup Tables
+.Ed 62
+.Bg 2
+4.1. Lookup Table Resource Management
+.Ed 68
+.Bg 3
+4.1.1. Create Lookup Table
+.Ed 68
+.Bg 3
+4.1.2. Copy Lookup Table
+.Ed 68
+.Bg 3
+4.1.3. Free Lookup Table
+.Ed 69
+.Bg 2
+4.2. Lookup Table Inquiry
+.Ed 70
+.Bg 3
+4.2.1. Get Table Info
+.Ed 70
+.Bg 3
+4.2.2. Get Predefined Entries
+.Ed 71
+.Bg 3
+4.2.3. Get Defined Indices
+.Ed 71
+.Bg 3
+4.2.4. Get Table Entry
+.Ed 72
+.Bg 3
+4.2.5. Get Table Entries
+.Ed 72
+.Bg 2
+4.3. Lookup Table Modification
+.Ed 74
+.Bg 3
+4.3.1. Set Table Entries
+.Ed 74
+.Bg 3
+4.3.2. Delete Table Entries
+.Ed 74
+.Bg 1
+5. Pipeline Contexts
+.Ed 75
+.Bg 2
+5.1. Pipeline Context Resource Management
+.Ed 83
+.Bg 3
+5.1.1. Create Pipeline Context
+.Ed 83
+.Bg 3
+5.1.2. Copy Pipeline Context
+.Ed 83
+.Bg 3
+5.1.3. Free Pipeline Context
+.Ed 84
+.Bg 2
+5.2. Pipeline Context Inquiry
+.Ed 85
+.Bg 3
+5.2.1. Get Pipeline Context
+.Ed 85
+.Bg 2
+5.3. Pipeline Context Modification
+.Ed 85
+.Bg 3
+5.3.1. Change Pipeline Context
+.Ed 85
+.Bg 1
+6. Renderers
+.Ed 86
+.Bg 2
+6.1. Renderer Resource Management
+.Ed 90
+.Bg 3
+6.1.1. Create Renderer
+.Ed 90
+.Bg 3
+6.1.2. Free Renderer
+.Ed 90
+.Bg 2
+6.2. Renderer Modification
+.Ed 91
+.Bg 3
+6.2.1. Change Renderer
+.Ed 91
+.Bg 2
+6.3. Renderer Inquiry
+.Ed 91
+.Bg 3
+6.3.1. Get Renderer Attributes
+.Ed 91
+.Bg 3
+6.3.2. Get Renderer Dynamics
+.Ed 92
+.Bg 2
+6.4. Client-Side Traversal Support
+.Ed 93
+.Bg 3
+6.4.1. Begin Rendering
+.Ed 93
+.Bg 3
+6.4.2. End Rendering
+.Ed 93
+.Bg 3
+6.4.3. Begin Structure
+.Ed 94
+.Bg 3
+6.4.4. End Structure
+.Ed 94
+.Bg 2
+6.5. Rendering Commands
+.Ed 95
+.Bg 3
+6.5.1. Render Output Commands
+.Ed 95
+.Bg 3
+6.5.2. Render Elements
+.Ed 95
+.Bg 3
+6.5.3. Accumulate State
+.Ed 96
+.Bg 3
+6.5.4. Render Network
+.Ed 96
+.Bg 1
+7. Renderer Picking
+.Ed 97
+.Bg 2
+7.1. Pick One
+.Ed 99
+.Bg 3
+7.1.1. Begin Pick One
+.Ed 99
+.Bg 3
+7.1.2. End Pick One
+.Ed 100
+.Bg 3
+7.1.3. Pick One
+.Ed 100
+.Bg 2
+7.2. Pick All
+.Ed 101
+.Bg 3
+7.2.1. Begin Pick All
+.Ed 101
+.Bg 3
+7.2.2. End Pick All
+.Ed 102
+.Bg 3
+7.2.3. Pick All
+.Ed 102
+.Bg 1
+8. Structures
+.Ed 104
+.Bg 2
+8.1. Structure Resource Management
+.Ed 104
+.Bg 3
+8.1.1. Create Structure
+.Ed 104
+.Bg 3
+8.1.2. Copy Structure
+.Ed 105
+.Bg 3
+8.1.3. Destroy Structures
+.Ed 105
+.Bg 2
+8.2. Structure Inquiry
+.Ed 106
+.Bg 3
+8.2.1. Get Structure Info
+.Ed 106
+.Bg 3
+8.2.2. Get Element Info
+.Ed 107
+.Bg 3
+8.2.3. Get Structures In Network
+.Ed 107
+.Bg 3
+8.2.4. Get Ancestors
+.Ed 108
+.Bg 3
+8.2.5. Get Descendants
+.Ed 109
+.Bg 3
+8.2.6. Fetch Elements
+.Ed 110
+.Bg 2
+8.3. Structure Resource Attribute Modification
+.Ed 111
+.Bg 3
+8.3.1. Set Editing Mode
+.Ed 111
+.Bg 3
+8.3.2. Set Element Pointer
+.Ed 111
+.Bg 3
+8.3.3. Set Element Pointer At Label
+.Ed 112
+.Bg 3
+8.3.4. Element Search
+.Ed 113
+.Bg 2
+8.4. Structure Editing
+.Ed 114
+.Bg 3
+8.4.1. Store Elements
+.Ed 114
+.Bg 3
+8.4.2. Delete Elements
+.Ed 115
+.Bg 3
+8.4.3. Delete Elements To Label
+.Ed 116
+.Bg 3
+8.4.4. Delete Elements Between Labels
+.Ed 116
+.Bg 3
+8.4.5. Copy Elements
+.Ed 117
+.Bg 3
+8.4.6. Change Structure References
+.Ed 118
+.Bg 1
+9. Name Sets
+.Ed 119
+.Bg 2
+9.1. Name Set Resource Management
+.Ed 119
+.Bg 3
+9.1.1. Create Name Set
+.Ed 119
+.Bg 3
+9.1.2. Copy Name Set
+.Ed 119
+.Bg 3
+9.1.3. Free Name Set
+.Ed 120
+.Bg 2
+9.2. Name Set Inquiry
+.Ed 121
+.Bg 3
+9.2.1. Get Name Set
+.Ed 121
+.Bg 2
+9.3. Name Set Modification
+.Ed 121
+.Bg 3
+9.3.1. Change Name Set
+.Ed 121
+.Bg 1
+10. Search Contexts
+.Ed 122
+.Bg 2
+10.1. Search Context Resource Management
+.Ed 124
+.Bg 3
+10.1.1. Create Search Context
+.Ed 124
+.Bg 3
+10.1.2. Copy Search Context
+.Ed 124
+.Bg 3
+10.1.3. Free Search Context
+.Ed 125
+.Bg 2
+10.2. Search Context Inquiry
+.Ed 126
+.Bg 3
+10.2.1. Get Search Context
+.Ed 126
+.Bg 2
+10.3. Search Context Modification
+.Ed 126
+.Bg 3
+10.3.1. Change Search Context
+.Ed 126
+.Bg 2
+10.4. Structure Network Searching
+.Ed 127
+.Bg 3
+10.4.1. Search Network
+.Ed 127
+.Bg 1
+11. PHIGS Workstations
+.Ed 128
+.Bg 2
+11.1. PHIGS Workstation Resource Management
+.Ed 129
+.Bg 3
+11.1.1. Create PHIGS Workstation
+.Ed 129
+.Bg 3
+11.1.2. Free PHIGS Workstation
+.Ed 130
+.Bg 2
+11.2. PHIGS Workstation Inquiry
+.Ed 131
+.Bg 3
+11.2.1. Get PHIGS Workstation Info
+.Ed 131
+.Bg 3
+11.2.2. Get Dynamics
+.Ed 135
+.Bg 3
+11.2.3. Get View Representation
+.Ed 137
+.Bg 2
+11.3. PHIGS Workstation Manipulation
+.Ed 138
+.Bg 3
+11.3.1. Redraw All Structures
+.Ed 138
+.Bg 3
+11.3.2. Update Workstation
+.Ed 138
+.Bg 3
+11.3.3. Redraw Clip Region
+.Ed 139
+.Bg 3
+11.3.4. Execute Deferred Actions
+.Ed 139
+.Bg 3
+11.3.5. Set View Priority
+.Ed 140
+.Bg 3
+11.3.6. Set Display Update Mode
+.Ed 140
+.Bg 3
+11.3.7. Map DC to WC
+.Ed 141
+.Bg 3
+11.3.8. Map WC to DC
+.Ed 141
+.Bg 2
+11.4. PHIGS Workstation Update
+.Ed 143
+.Bg 3
+11.4.1. Set View Representation
+.Ed 143
+.Bg 3
+11.4.2. Set Workstation Window
+.Ed 143
+.Bg 3
+11.4.3. Set Workstation Viewport
+.Ed 144
+.Bg 3
+11.4.4. Set HLHSR Mode
+.Ed 144
+.Bg 3
+11.4.5. Set Buffer Mode
+.Ed 145
+.Bg 2
+11.5. Posting/Unposting Structures
+.Ed 146
+.Bg 3
+11.5.1. Post Structure
+.Ed 146
+.Bg 3
+11.5.2. Unpost Structure
+.Ed 146
+.Bg 3
+11.5.3. Unpost All Structures
+.Ed 147
+.Bg 3
+11.5.4. Get PHIGS Workstation Postings
+.Ed 147
+.Bg 1
+12. Workstation Picking
+.Ed 148
+.Bg 2
+12.1. Pick Device Descriptors
+.Ed 148
+.Bg 3
+12.1.1. Get Pick Device Descriptor
+.Ed 150
+.Bg 3
+12.1.2. Change Pick Device Descriptor
+.Ed 150
+.Bg 2
+12.2. Pick Measure
+.Ed 151
+.Bg 3
+12.2.1. Create Pick Measure
+.Ed 152
+.Bg 3
+12.2.2. Free Pick Measure
+.Ed 152
+.Bg 3
+12.2.3. Get Pick Measure Attributes
+.Ed 152
+.Bg 3
+12.2.4. Update Pick Measure
+.Ed 153
+.Bg 1
+13. PEX Fonts
+.Ed 154
+.Bg 2
+13.1. PEX Font Resource Management
+.Ed 155
+.Bg 3
+13.1.1. Open PEX Font
+.Ed 155
+.Bg 3
+13.1.2. Close PEX Font
+.Ed 155
+.Bg 2
+13.2. PEX Font Inquiry
+.Ed 156
+.Bg 3
+13.2.1. Query PEX Font
+.Ed 157
+.Bg 3
+13.2.2. List PEX Fonts
+.Ed 157
+.Bg 3
+13.2.3. List PEX Fonts with Info
+.Ed 158
+.Bg 3
+13.2.4. Query PEX Text Extents
+.Ed 159
+.Bg 1
+Appendix A: Definition of Standard PEX Subsets
+.Ed 160
+.Bg 1
+Appendix B: Minimum Support for PHIGS/PHIGS-PLUS
+.Ed 166
+.Bg 1
+Appendix C: Definition of PEX Errors
+.Ed 168
+.Bg 1
+Appendix D: Definition of Table Default Values
+.Ed 179
+.Bg 1
+Appendix E: Registered PEX Escapes
+.Ed 182
+.Pe			\" end on even page