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// SOURCE: Graphviz Source ./tests/graphs/unix.gv
/* courtesy Ian Darwin and Geoff Collyer, Softquad Inc. */
digraph unix {
size="6,6";
	"5th Edition" -> "6th Edition";
	"5th Edition" -> "PWB 1.0";
	"6th Edition" -> "LSX";
	"6th Edition" -> "1 BSD";
	"6th Edition" -> "Mini Unix";
	"6th Edition" -> "Wollongong";

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look at me

again

oh yes

1. one thing
2. another
3. the last

• pow

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The video is in the 1st comment

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/*************************************************************************
  swimlanes

- for more info on swim lanes: https://en.wikipedia.org/wiki/Swim_lane

- new attributes, all at the parent cluster-level:
  - swimlanePool=true/false/[0-9]+  - turns on swimlane algorithm
    - if having nested swimlanes is desirable, true/false is
      insufficient.  Instead, use swimlane=someuniquename
  - swimlaneequalSize=true/false  all lanes given same width, or width determined "naturally" by dot

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/****************************************************************
  swapHeadTail.gvpr  -  swap tail & head of edge(s)

  (only seems to have "real" effect when using dot)

  replaces edges with tail & head swapped
    and (unless using -a0 option) "fixes" all the attribures that are associated with head or tail

  to swap ALL edges, either add
   - edge [swap=1] to your myFile.gv, then

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/********************************************************************
  gvlint.gvpr - lint program for Graphviz input

USAGE:
  gvpr -f gvlint.gvpr                # just produces a "report" (assumes dot)
  gvpr -cf gvlint.gvpr               # report & reformatted input
  gvpr -a neato -f gvlint.gvpr       # report assuming neato attributes
  gvpr -a S -f gvlint.gvpr myfile.gv # skip "pos not defined ..."
  gvpr -a "neato A" -f gvlint.gvpr   # report assuming neato attributes
                                     #     and show all attributes used

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BEGIN{
  int     clusterCnt, cHtmlCnt;
  graph_t aGraph;
  string  printBuf;
  ////////////////  help  /////////////////////////////////////////////
  string  help="
  gvstats.gvpr :
  a GVPR program that provides information about Graphviz input files
  - the file name
  - the layout engine  (if set)

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/*

  neato complains about overlapping nodes, kicks out warning message (see below),
  and uses splines=false.

  "Warning: the bounding boxes of some nodes touch - falling back to straight
   line edges"

  dot bug work-around:
  - check each edge

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#!/bin/sh
cat <<QUitquIT
# This is a shell archive. 
#
# to execute this file, type:   sh alter_archive.sh
# 
# On Linux/UNIX/MacOS(?) systems it is an executable program that will create 
# a subdirectory (named alter.d) in the currect directory and then 
# install multiple (text) files in that directory.  
# This shell archive and all contents are humanly readable - no binary files.

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#!/bin/sh
cat <<QUitquIT
# This is a shell archive. 
#
# to execute this file, type:   sh socioGram.d_archive.sh
# 
# On Linux/UNIX/MacOS(?) systems it is an executable program that will create 
# a subdirectory (named socioGram.d) in the currect directory and then 
# install multiple (text) files in that directory.  
# This shell archive and all contents are humanly readable - no binary files.