vprerex - graphical front-end and viewer for the prerex(1) prerequisite-chart editor

       R.  D. Tennent (rdt@cs.queensu.ca), adapted from David Boddie's PDFviewer, described in the QT Quarterly:
       http://doc.trolltech.com/qq/QtQuarterly27.pdf.

vprerex is based on the Qt-4 library. It calls xterm(1) and prerex(1) for the  editing  window  and  uses
       poppler-qt4 for rendering PDF files.

vprerex  (visual  prerex)  is  a  GUI  front-end  and  viewer  for  the  prerex(1)  interactive editor of
       prerequisite-chart descriptions in the prerex(5) format.  The viewer may be used just as  a  minimalistic
       viewer  of  arbitrary PDF files  but supports editing of charts generated using prerex.sty(7) by allowing
       coordinates of course boxes, arrows, and background points to be conveyed back to the prerex(1)  command-
       line using the clipboard.

vprerex - graphical front-end and viewer for the prerex(1) prerequisite-chart editor

prerex(1), prerex(5), prerex.sty(7), and xterm(1).

vprerex-6.2                                        2011-10-28                                         VPREREX(1)

vprerexbasefile[.tex] [ chartfile[.tex] ]

       vprerexfile.pdfvprerex

       If vprerex is invoked on a PDF file, it simply displays that file.

       If  the  (first)  argument  does  not have the .pdf suffix, it is assumed to be the base file for a LaTeX
       document containing a prerequisite-chart description in prerex(5) format, to be edited  using  prerex(1).
       If  a  second  argument  is  supplied,  it  is regarded as an included file containing the specific chart
       environment to be edited.

       If no arguments are supplied, a file-opening dialog allows the user the specify the prerex(1)  base  file
       to  be  edited  (or  the  PDF  file  to be viewed); if a separate chartfile is needed, vprerex(1) must be
       invoked wth two arguments on the command line.

       If the mouse hovers over a hyperlink in the PDF viewing  window,  the  cursor  shape  will  change  to  a
       pointing finger and a tooltip will display the URI.  If the PDF file displayed contains a chart generated
       using  prerex.sty(7)  and  the  background coordinate grid has been enabled, left-clicking the mouse on a
       course box, arrow mid-point, or background point will load the relevant coordinates into the X clipboard.
       The cursor shape changes to a plus-sign to indicate  successful  capture  of  the  coordinates.   Middle-
       clicking  the  mouse at the prerex(1) command-line will then paste those coordinates into a command being
       composed.  If the chart file is regenerated, the updated document will be re-loaded.