=============BEGINNING OF DOCUMENT=================

This document is Copyright (c) 1996 by Ravi Nielsen
All Rights Reserved.

You may download and print this document for your own
use.

You may not copy, distribute, or publish this document
electronically or on paper without the express permission
of the author.

You may freely use the WIF Specification itself in any
weaving program you develop, provided your program 
includes all sections described below under Minimum
Requirements--including but not limited to the WIF 
section and the Version, Date, and Developers information.

===================================================

WEAVING INFORMATION FILE (WIF) SPECIFICATION
VERSION 1.0
MARCH 3, 1996

DEVELOPED BY:
      RAVI NIELSEN, PATTERNLAND WEAVE SIMULATOR
      BOB KEATES,   FIBERWORKS PCW
      ROB SINKLER,  SWIFTWEAVE

WRITTEN BY:
      RAVI NIELSEN, MAPLE HILL SOFTWARE

===================================================

EMAIL ADDRESSESS 

Ravi Nielsen:  ravi@mhsoft.com
Bob Keates:    keates@chembio.uoguelph.ca
Rob Sinkler:   shrub@slip.net

RATIONALE

Currently each weaving program uses its own format for 
storing weave information.  Each format is especially suited 
to the individual program, but does not lend itself to 
translation across programs.  In addition files are machine 
readable only. 

CRITERIA

The Weaving Information File (WIF) specification is designed 
to meet the following criteria: 

1.  It can evolve and change as the need arises, without 
rendering earlier versions unreadable by new programs nor 
later versions unreadable by older programs. 

2.  It can be understood by a human reader. 

3.  It can be read by any computer capable of reading an 
ASCII text file. 

To meet the above criteria, the WIF takes the form of a 
Microsoft Windows ".INI" file.  But it departs from this 
standard in at least one important way.  WIF files are not 
limited to 64K, as are Windows 3.1 ini files.  This means 
that standard Windows 3.1 functions can NOT be used to
process WIF files.  It may be that Windows 95 functions will 
work.  Macintosh and Windows 3.1 programmers must write 
their own utilities to read and write WIF files. 

WIF SPECIFICATION 
================= 

The WIF specification consists of a set of English language 
Section and Key names and agreements on how the data will be 
presented.  Where several possible data formats exist, 
preference will be given to the format that meets all three 
criteria. Efficiency is sacrificed in favor of readability 
by humans. Specifically, efficient bit sensitive numbers are 
abandoned in favor of comma separated arrays understandable 
by a weaver. 

SECTION AND KEY NAMES

The INI file specification dictates that section names are 
in brackets [section name] and key names are followed by an 
equals sign and the data:  Keyname=data. 

COMMENTS

Comments may be freely included if prefaced by a semicolon 
at the beginning of the line.  Comments may also be included 
following a numeric entry or boolean entry.  While not 
required, these comments should be prefixed by a semicolon.  
Key lines containing a text string may not contain a 
comment.


INFORMATIONAL AND DATA SECTIONS

For the purpose of the WIF specification, sections are 
defined as "INFORMATIONAL" and "DATA" Sections.  A 
[CONTENTS] section is a special Informational Section that 
lists all other Sections with the exception of two: 
[TRANSLATIONS], and [WIF].  Each section is included in 
[CONTENTS] as a boolean Keyline with a value of yes or no.  
This tells the processing program whether the section exists 
or not. 


UPPER AND LOWER CASE

By convention, Section names are upper case and Key Names 
are upper/lower case.  But programs must process all section 
and key names in a case insensitive manner.  Specifically, 
the section names which appear as key names under [CONTENTS] 
may commonly appear in upper case, since they are also 
Section names. 


ORDER INDEPENDENCE

Programs that process WIF files may not depend on a specific 
order of section names, nor of key lines within sections.  
Note that this precludes the use of the Windows 
ReadPrivateProfileString with a nil Key to put all lines in
a section into a buffer.  While the order of Key lines in 
data sections like [THREADING] can expected to be written in 
numeric order, the WIF standard says that each Key must be 
evaluated in case this order is not followed. 

This stated, however, some programs may work most 
efficiently with a preferred Section order.  See "Optional 
Programming Considerations" at the end of this document. 


MINIMUM REQUIREMENTS

Every WIF file should include the following Sections and Key 
lines.  The boolean values of the sections listings as Key 
lines under [CONTENTS] determines whether the Section itself 
exists.  Detailed notes on each section and on the valid 
values for Key lines is included in the Sample Weaving 
Information File format that follows immediately after the 
Minimum requirements listing. 

-------------Begin Minimum Requirements-----------------

[TRANSLATIONS]
Language=

[WIF]
Version=1.0
Date=March 3, 1996
Developers=Ravi Nielsen, Bob Keates, Rob Sinkler
Source Program=
Source Version=

[CONTENTS]
COLOR PALETTE=
WARP SYMBOL PALETTE=
WEFT SYMBOL PALETTE=
TEXT=
WEAVING=
WARP=
WEFT=
BITMAP IMAGE=
BITMAP FILE=
DESIGN=
; Beginning of Data Sections
NOTES=
TIEUP=
; Color and Symbol tables
COLOR TABLE=
WARP SYMBOL TABLE=
WEFT SYMBOL TABLE=
; Warp Data Sections
THREADING=
WARP THICKNESS=
WARP THICKNESS ZOOM=
WARP SPACING=
WARP SPACING ZOOM=
WARP COLORS=
WARP SYMBOLS=
; Weft Data Sections
TREADLING=
LIFTPLAN=
WEFT THICKNESS=
WEFT THICKNESS ZOOM=
WEFT SPACING=
WEFT SPACING ZOOM=
WEFT COLORS=
WEFT SYMBOLS=
; Bitmap or Design Data
BITMAP IMAGE DATA=
DESIGN DATA=

-----------End Minimum Requirements-----------------


===================================================

A SAMPLE WEAVING INFORMATION FILE

The following section is a machine readable sample file.
It should be extracted from this document and saved with a
".WIF" suffix for testing purposes.

Following the machine readable section are additional
sections containing example data for Bitmap Image Data,
Bitmap File, Design, and Design Data sections.  Following
that is the section on Optional Programming Considerations.

NOTE:

The weaving represented by this sample file is not meant to
represent an actual weaving pattern.  Rather it was created
as a programmer's test pattern to show a range of 16 colors.

;=============BEGIN MACHINE READABLE================

; WEAVING INFORMATION FILE (WIF)
; DOCUMENTATION OF VERSION 1.0
; MARCH 3, 1996


[TRANSLATIONS]
; Allows the creation of foreign language WIF files. If language
; equals English, no further action is necessary; if another
;language is listed, each section and key name must be translated
;in this section.  All further processing must use the referenced
;names.  The purpose is to assure that the file can be read by
;non-English speaking readers.

Language=English

;OR

;Language=Martian
;   translation of section and key names follows

;Warp=Wrpa
;   the Martian word for Warp
;Threading=Thrda
;   the Martian word for threading


[WIF]
; Provides information on the file format.
Version=1.0
; the WIF version supported.
Date=March 3, 1996
;  the date of the WIF version
Developers=Ravi Nielsen, Bob Keates, Rob Sinkler
; the initial collaborators who designed the WIF format
Source Program=A Weaving Program
; the name of the program that wrote the WIF file
Source Version=V 1.12W
; the version of the program--an alpha field

[CONTENTS]
;This section lists every section contained in the file.  A 
;program should read these Keys to determine in advance what 
;data is available in the file.  It can then present the user 
;with a dialog box asking which sections to include. By 
;reading all sections up to the beginning of data sections, 
;programs can present the user with detailed information 
;about the contents of the file. 

;Valid values= yes or no; true or false; 1 or 0

COLOR PALETTE=yes
WARP SYMBOL PALETTE=yes
WEFT SYMBOL PALETTE=yes
TEXT=yes
WEAVING=yes
WARP=yes
WEFT=yes
BITMAP IMAGE=no
BITMAP FILE=no
DESIGN=no
; Beginning of Data Sections
NOTES=yes
TIEUP=yes
; Color and Symbol tables
COLOR TABLE=yes
WARP SYMBOL TABLE=yes
WEFT SYMBOL TABLE=yes
; Warp Data Sections
THREADING=yes
WARP THICKNESS=yes
WARP THICKNESS ZOOM=yes
WARP SPACING=yes
WARP SPACING ZOOM=yes
WARP COLORS=yes
WARP SYMBOLS=yes
; Weft Data Sections
TREADLING=yes
LIFTPLAN=yes
WEFT THICKNESS=yes
WEFT THICKNESS ZOOM=yes
WEFT SPACING=yes
WEFT SPACING ZOOM=yes
WEFT COLORS=yes
WEFT SYMBOLS=yes
BITMAP IMAGE DATA=no
DESIGN DATA=no

[COLOR PALETTE]
Entries=16
; maximum number of entries in color table
Form=RGB
; Valid values: RGB; CMYK; HSV(Hue,Saturation,Value)
Range=0,255
; the range of allowable values contained in the palette entries


[WARP SYMBOL PALETTE]
; maximum number of entries in warp symbol table
Entries=16

[WEFT SYMBOL PALETTE]
; maximum number of entries in weft symbol table
Entries=16

[TEXT]
; provides information about the weaving and artist
Title=A Sample WIF File
;title of the Weaving
Author=Ravi Nielsen
;name of the artist
Address=
;address of the artist
EMail=
;email of the artist
Telephone=
;voice number of the artist
FAX=
;FAX number of the artist

[WEAVING]
; information on the weaving
Shafts=10
Treadles=12
Rising Shed=yes
Profile=no

[WARP]
; this section describes the warp
Threads=32
; 32 threads in the threading section
Colors=16
; 16 colors are used
Palette=yes
; the color section references the palette
ColorMix=yes
; color section includes RGB, CMKY, or HSV as specified by 
; Color Palette Form 

Color=0,0,0,0
; the default single color.  [Palette Ndx],R,G,B
Units=Decipoints
; units in which spacing and thickness are measured
; valid values:  
;     decipoints, inches, centimeters, display, printer
Spacing=100
; default spacing is 100 decipoints
Thickness=80
; default thickness is 80 decipoints
Symbol=X
; single symbol is "X"
; See comments under Warp Symbol Table for valid formats

[WEFT]
; this section describes the weft.  See the comments under
; Warp for a description of each line.
Threads=32
Colors=16
Palette=yes
ColorMix=yes
Color=0,0,0,255
Units=Decipoints
Spacing=100
Thickness=80
Symbol==

[NOTES]
;Each line is prefaced by its line number.
1=This is a note line.
2=This is another line.

[TIEUP]
; The shafts tied to each treadle are separated by commas
; programs that store a tieup in a bit sensitive number must
; convert the comma separated string.  Maximum number of
; values is specified under [Weaving] Shafts
1=1,3,9
2=2,4,8,10
3=3,5,7,9
4=4,6,8
5=5,7
6=4,6,8
7=3,5,7,9
8=2,4,8,10
9=1,3,9
10=2
11=1,3
12=2

[COLOR TABLE]
; Each entry must take the form of a triplet or Quadruplet as
; specified by the Form entry under [Color Palette].
1=0,0,168
2=0,168,0
3=0,168,168
4=168,0,0
5=168,0,168
6=168,88,0
7=168,168,168
8=88,88,88
9=88,88,255
10=88,255,88
11=88,255,255
12=255,88,88
13=255,88,255
14=255,255,88
15=255,255,255
16=0,0,0

[WARP SYMBOL TABLE]
; The maximum number of entries is specified under
; [Warp Symbol Palette].
; Entries may take the form of a character or an
; ASCII code, or a quoted symbol
; Examples:
;1=1     ; numeral 1
;2=X     ; character X
;3=#219  ; ASCII character 219
;4=#35   ; the '#' character specified by ASCII code only
;5=' '   ; the space character

1=1
2=2
3=3
4=4
5=5
6=6
7=7
8=8
9=9
10=A
11=B
12=C
13=D
14=E
15=F
16=G

[WEFT SYMBOL TABLE]
; The maximum number of entries is specified under 
; [Weft Symbol Palette].
; See Warp Symbol Table comments for valid formats
1=1
2=2
3=3
4=4
5=5
6=6
7=7
8=8
9=9
10=A
11=B
12=C
13=D
14=E
15=F
16=G

[THREADING]
; The threading for the warp.
1=4
; warp thread 1 uses shaft 4
2=5
; warp thread 2 uses shaft 5
3=6
4=7
5=8
6=9
7=10
8=1
9=2
10=3
11=4
12=5
13=6
14=7
15=8
16=0
17=10
18=1
19=2
20=3
21=4
22=5
23=6
24=7
25=8
26=10
27=1
28=2
29=5
30=4
31=3
32=2

[WARP THICKNESS]
; the thickness of each warp thread in the selected unit.
1=80
; warp thread 1 is 80 decipoints
2=160
; warp thread 2 is 160 decipoints
3=80
4=160
5=80
6=160
7=80
8=160
9=80
10=160
11=80
12=160
13=80
14=160
15=80
16=160
17=80
18=160
19=80
20=160
21=80
22=160
23=80
24=160
25=80
26=160
27=80
28=160
29=80
30=160
31=80
32=160

[WARP THICKNESS ZOOM]
; a magnification factor times the default thickness
1=1
; Warp thread 1 is 1 X the default warp thickness
2=2
; Warp thread 2 is 2 X the default warp thickness
3=1
; Warp thread 3 is 1 X the default warp thickness
4=2
5=1
6=2
7=1
8=2
9=1
10=2
11=1
12=2
13=1
14=2
15=1
16=2
17=1
18=2
19=1
20=2
21=1
22=2
23=1
24=2
25=1
26=2
27=1
28=2
29=1
30=2
31=1
32=2

[WARP SPACING]
; the spacing of each warp thread in the selected unit
1=100
; Warp thread 1 exists within a spacing of 100 decipoints
2=200
; Warp thread 2 exists within a spacing of 200 decipoints
3=100
4=200
5=100
6=200
7=100
8=200
9=100
10=200
11=100
12=200
13=100
14=200
15=100
16=200
17=100
18=200
19=100
20=200
21=100
22=200
23=100
24=200
25=100
26=200
27=100
28=200
29=100
30=200
31=100
32=200

[WARP SPACING ZOOM]
; a magnification factor times the default spacing
1=1
; Warp thread 1 exists within a spacing of 1 X Default Warp Spacing
2=2
; Warp thread 2 exists within a spacing of 2 X Default Warp Spacing
3=1
4=2
5=1
6=2
7=1
8=2
9=1
10=2
11=1
12=2
13=1
14=2
15=1
16=2
17=1
18=2
19=1
20=2
21=1
22=2
23=1
24=2
25=1
26=2
27=1
28=2
29=1
30=2
31=1
32=2

[WARP COLORS]
; first number is an index into the palette
; followed by an optional color mix if [WARP] ColorMix=yes
1=1,0,0,168
; Warp thread one uses Palette Index 1; which is RGB 0,0,168
2=1,0,0,168
3=2,0,168,0
4=2,0,168,0
5=3,0,168,168
6=3,0,168,168
7=4,168,0,0
8=4,168,0,0
9=5,168,0,168
10=5,168,0,168
11=6,168,88,0
12=6,168,88,0
13=7,168,168,168
14=7,168,168,168
15=8,88,88,88
16=8,88,88,88
17=9,88,88,255
18=9,88,88,255
19=10,88,255,88
20=10,88,255,88
21=11,88,255,255
22=11,88,255,255
23=12,255,88,88
24=12,255,88,88
25=13,255,88,255
26=13,255,88,255
27=14,255,255,88
28=14,255,255,88
29=15,255,255,255
30=15,255,255,255
31=16,0,0,0
32=16,0,0,0

[WARP SYMBOLS]
; Index into the Warp Symbol Table
1=1
; Warp thread 1 uses symbol #1
2=2
; Warp thread 2 uses symbol #2
3=1
; Warp thread 3 uses symbol #1
4=2
5=1
6=2
7=1
8=2
9=1
10=2
11=1
12=2
13=1
14=2
15=1
16=2
17=1
18=2
19=1
20=2
21=1
22=2
23=1
24=2
25=1
26=2
27=1
28=2
29=1
30=2
31=1
32=2

[TREADLING]
; The treadling for the weft.
; Valid formats include single treadle numbers and
; multiple treadle numbers separated by commas
; Example:
; 1=1,3  means Weft 1 uses both treadle 1 and 3
1=1
2=2
3=3
4=2
5=3
6=2
7=3
8=4
9=5
10=6
11=7
12=8
13=9
14=10
15=11
16=0
; weft thread 16 is empty
17=1
18=2
19=3
20=4
21=5
22=6
23=7
24=8
25=9
26=0
27=11
28=12
29=4
30=5
31=6
32=7

[LIFTPLAN]
; The shafts raised (if Rising Shed) for each weft row
1=1,3,9
2=2,4,8,10
3=3,5,7,9
4=2,4,8,10
5=3,5,7,9
6=2,4,8,10
7=3,5,7,9
8=4,6,8
9=5,7
10=4,6,8
11=3,5,7,9
12=2,4,8,10
13=1,3,9
14=2
15=1,3
16=0
17=1,3,9
18=2,4,8,10
19=3,5,7,9
20=4,6,8
21=5,7
22=4,6,8
23=3,5,7,9
24=2,4,8,10
25=1,3,9
26=0
27=1,3
28=2
29=4,6,8
30=5,7
31=4,6,8
32=3,5,7,9

[WEFT THICKNESS]
; thickness of each weft thread in the specified unit
1=80
2=160
3=80
4=160
5=80
6=160
7=80
8=160
9=80
10=160
11=80
12=160
13=80
14=160
15=80
16=160
17=80
18=160
19=80
20=160
21=80
22=160
23=80
24=160
25=80
26=160
27=80
28=160
29=80
30=160
31=80
32=160

[WEFT THICKNESS ZOOM]
; a magnification factor times the default thickness
1=1
2=2
3=1
4=2
5=1
6=2
7=1
8=2
9=1
10=2
11=1
12=2
13=1
14=2
15=1
16=2
17=1
18=2
19=1
20=2
21=1
22=2
23=1
24=2
25=1
26=2
27=1
28=2
29=1
30=2
31=1
32=2

[WEFT SPACING]
; the spacing of each weft thread in the selected unit
1=100
2=200
3=100
4=200
5=100
6=200
7=100
8=200
9=100
10=200
11=100
12=200
13=100
14=200
15=100
16=200
17=100
18=200
19=100
20=200
21=100
22=200
23=100
24=200
25=100
26=200
27=100
28=200
29=100
30=200
31=100
32=200

[WEFT SPACING ZOOM]
; a magnification factor times the default spacing
1=1
2=2
3=1
4=2
5=1
6=2
7=1
8=2
9=1
10=2
11=1
12=2
13=1
14=2
15=1
16=2
17=1
18=2
19=1
20=2
21=1
22=2
23=1
24=2
25=1
26=2
27=1
28=2
29=1
30=2
31=1
32=2

[WEFT COLORS]
; first number is an index into the palette
; followed by an optional color mix if [WARP] ColorMix=yes
1=1,0,0,168
2=1,0,0,168
3=2,0,168,0
4=2,0,168,0
5=3,0,168,168
6=3,0,168,168
7=4,168,0,0
8=4,168,0,0
9=5,168,0,168
10=5,168,0,168
11=6,168,88,0
12=6,168,88,0
13=7,168,168,168
14=7,168,168,168
15=8,88,88,88
16=8,88,88,88
17=9,88,88,255
18=9,88,88,255
19=10,88,255,88
20=10,255,255,255
21=11,88,255,255
22=11,88,255,255
23=12,255,88,88
24=12,255,88,88
25=13,255,88,255
26=13,255,88,255
27=14,255,255,88
28=14,255,255,88
29=15,255,255,255
30=15,255,255,255
31=16,0,0,0
32=16,0,0,0

[WEFT SYMBOLS]
; Index into the Warp Symbol Table
1=1
2=2
3=1
4=2
5=1
6=2
7=1
8=2
9=1
10=2
11=1
12=2
13=1
14=2
15=1
16=2
17=1
18=2
19=1
20=2
21=1
22=2
23=1
24=2
25=1
26=2
27=1
28=2
29=1
30=2
31=1
32=2


;===============END MACHINE READABLE================

The following sections illustrate support for
Bitmap Image Data, Bitmap File, Design, and
Design Data sections.


[BITMAP IMAGE DATA]
Pixelcolumns=96
; implies 12 bytes per row if pixeldepth=1
Pixelrows=48
Pixeldepth=1
; if pixeldepth>1, planes=1
Planes=4
; if planes>1, pixeldepth=1
1=ff,ff,fc,1e,3c,78,. . . . . .
2=. . . . .

49=. . . .      ; data for plane 2 starts here


[BITMAP FILE]
Platform=PC
;Valid Values are  PC, MAC, UNIX
Path=C:\weavings
; or location string of whatever platform
Format=BMP
; Valid values are BMP, PCX, TIFF, GIF
File=bitimage.bmp

[DESIGN]
; This is another way of representing a pattern, be it a 
; drawdown or other pattern. Each square of visible pattern is 
; represented by an x,y coordinate; a palette index; and an 
; optional color mix in RGB, CMKY, or HSV form.  Thus a large 
; area with few filled in squares requires relatively little 
; information to describe it compared to a bitmap. 

LeftRight=true
; orientation of coordinate grid
TopDown=true
; orientation of coordinate grid
Columns=10
; width of design
Rows=10
; height of design
Entries=25
; number of defined pixels
Palette=yes
; color section references the palette
ColorMix=yes
; color section includes RGB, CMKY or HSV values

[DESIGN DATA]
1=1,2,3,255,255,255
; coordinate x=1 y=2  palette color=3   RGB=255,255,255
2=10,10,1,0,0,0
; coordinate x=10 y=10  palette color=1   RGB=0,0,0
;etc.


======END OFFICIAL WIF SPECIFICATION DOCUMENTATION======

OPTIONAL PROGRAMMING CONSIDERATIONS

The following notes address issues which fall outside the 
official WIF standard.  They are presented in that light by 
the author, Ravi Nielsen, and represent issues which relate 
specifically to Patternland Weave Simulator and perhaps 
other programs which may in the future use a similar coding 
strategy. 

1.  PREFERRED SECTION ORDER

Programs which read WIF files must not rely on the order of 
Sections within the file or the order of data lines within 
sections. 

However, some programs (including Patternland) use a multi-
pass sequential read approach, while other programs use 
completely order-independent Windows-style INI file 
functions modified to support files larger than 64K. 

Programs which use the sequential read approach are most 
efficient if the "Information" Sections describing the 
"Data" Sections come first in the file. Patternland uses a 
"smart" 4-pass model.  WIF files can be optimized for these 
programs by placing the Information Sections first.  The 
following list is a suggested order for a WIF file optimized 
for sequential read. When files are written in this order, 
they can be read in one pass sequentially without resetting to 
the beginning.  The order of sections within each "pass" is 
not important. 

1st pass:

TRANSLATIONS

2nd pass:

WIF
CONTENTS
COLOR PALETTE
WARP SYMBOL PALETTE
WEFT SYMBOL PALETTE

3rd pass:
  TEXT
  WEAVING
  WARP (this gives me a thread count to show the user)
  WEFT  (likewise)
  BITMAP IMAGE (could present user with size of bitmap)
  BITMAP FILE (could present user with name of bitmap file)
  DESIGN (could present user with size of Design)

At this point a user selection dialog may be presented 
containing detailed information about the file, allowing the 
user to select what to read. 


4th pass, all the remaining data sections.

By reading Translations first, keynames in the WIF section 
can be translated. 

Because the Color_Palette section contains the Color Form 
and Range specification, and the Warp and Weft sections 
contain colors, the Color Palette section must be read 
first. 

Once I've read the CONTENTS section I know which of the Pass 
3 major sections to expect.  The group is considered 
complete once I have all the ones listed "yes" in CONTENTS. 

Patternland code assigns a pass group number to each 
section.  As I read the file, if I come upon a section in a 
higher group before I'm done with the current group, the 
program resets to the beginning of the file before reading 
the next group of sections.  If, however, the file was 
written with sections grouped as above, I never have to 
start over and do one continuous sequential read--except for 
pausing after Groups 1-3 to present the user with an 
information and options dialog box.  While this approach may 
seem involved, I believe it to be much faster than 
independently finding each Section/Keyname and reading its 
data. 


2. MULTI-LINE TITLES

Patternland supports multiline Titles; WIF does not.

Patternland replaces CRLF with // on writing a Title to a 
WIF file and replaces // with a CRLF on reading a WIF file.  
If a program supports multiline titles, the programmer may 
wish to adopt this convention. 

New lines are represented by double slashes as per this 
example: 

[TEXT]
Title=A multiline Title//New Line 2//New Line 3


3.  USER OPTIONS

A program that supports WIF files may wish to take advantage 
of the flexibility the specificiation provides for 
extracting specific sections from the file.  A program may 
present the user with a Dialog box on reading a WIF file 
after processing the Informational Sections and learning the 
details of what the file contains; or on writing the file 
before the writing begins.  Following are some of the 
options Patternland provides the user.

Range
  Saving a WIF: Dialog presents the current Warp and Weft limits.
    
    From and To ranges are always written out as Threads 1 
    to Threads [To-From+1]. 

  Reading a WIF:  Dialog presents the ranges contained in 
  the file, i.e., 1 to Threads. 

New/Overwrite/Insert/Add  AT Thread.

  New:  At Thread is forced to 1.  Current weaving is erased 
  and thread ranges are read in starting with 1. 

  Overwrite:  At Thread is enabled.  Thread ranges are read 
  in and replace threads starting with respective warp and 
  weft At Thread values. If range exceeds current weaving, 
  additional threads are added. 

  Insert:  At Thread is enabled.  Thread ranges are read in 
  and inserted starting with respective warp and weft At 
  Thread values. 

  Add: At Thread is disabled.  Reads last thread in current 
  warp and weft. Thread ranges are read in and added to the 
  end of the current weaving. 

Checkboxes are presented for the user to individually select 
  most of the components of the file.

A View option allows the user to view the TEXT information 
  prior to loading the file.

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