PS Would it be feasible to add a PDF-certificate-signer so that ConTeXt prompts for a passphrase and produces a signed PDF?  This would be particularly useful in the letter module but would in fact be welcome throughout.  

I have been using http://portablesigner.sourceforge.net/ to sign finished PDF files, but it would be neat to have the process integrated in ConTeXt.

Best,
Michael


On Fri, Jul 12, 2013 at 10:11 AM, Michael Ash <mash@econs.umass.edu> wrote:
Dear all,

I am using the letter module that came with context.   A sample of a basic letter is below; I have put in "dummy" for the logo and the signature, but these are working fine when I include the files. 

I have several questions:
  1. to center the footer.  
  2. to lower the  footer (closer to the bottom of the page)
  3. to delete the word "Date" above the date.
  4. to put the date above the recipient address (and how in general do I adjust the vertical space here).
  5. to left-justify the date.
  6. to control the foldmarks (for US-letter-size paper, omit, etc.)
I have consulted http://wiki.contextgarden.net/Letter but there are many things I don't understand.   What is the meaning  of "alternative=example"; what is the option "preset="  in \setuplayer[foot] ?

Also is there a better way to manage color?  I \definecolor, \startcolor, \stopcolor, but maybe there is a better way to indicate that certain sections of the letter should be in a color.  Thanks.

Thank you very much for your guidance.

Yours,
Michael








\usemodule[letter]
\setuppapersize[letter][letter]
\definecolor[maroon][h=990033]

\setuplanguage [en] [date={dd, month, year}] 

\setupletteroptions
[language=english,
bodyfont={rm,12pt},
]

% Define logo for the first page
\defineletterelement[layer][head][example]%
{\framed[background=logohead,height=25mm,frame=off,align=left]%
{\externalfigure[dummy]}}

% We put our logo in the head
\setupletterlayer[head]
[alternative=example,
x=9mm,
y=10mm
]

\defineletterelement[layer][foot][example]%
                    {\startcolor[maroon] \ss  \tfx The University of Massachusetts is an Affirmative Action/Equal Opportunity Institution. \stopcolor}
   \setupletterlayer[foot][
     align=centerbottom,
     alternative=example]

\setupletter[
name={Michael Ash},
dept={Department of Economics},
building={Thompson Hall},
street={200 Hicks Way},
city={Amherst, MA 01003-9277},
]
   
   \defineletterelement[layer][location][example]%
       {\setuptabulate[bodyfont=normal]
         \startcolor[maroon]
       \starttabulate[|lw(.4\textwidth)|rw(.55\textwidth)|]
       \NC \tfa \sc University of Massachusetts       \NC                                 \NR
       \NC \tfa \sc Amherst                           \NC  \correspondenceparameter{dept} \NR
       \NC                                   \NC                                 \NR
       \NC\correspondenceparameter{building} \NC  tel \correspondenceparameter{phone} \NR
       \NC\correspondenceparameter{street} \NC fax \correspondenceparameter{fax}\NC\NR
       \NC\correspondenceparameter{city} \NC \correspondenceparameter{email} \NC\NR
   \stoptabulate
 \stopcolor}

 \setupletterlayer[location]
 [alternative=example,
 x=42mm,
 y=4mm
 ]
   

\starttext
   
   \startletter[
       toname={Professor Addressee},
       toaddress={123 West Home Ave.\\Chicago, IL 60614},
       opening={Dear Dr. Addressee,},
       subject={A test letter},
       closing={Best regards,},
       signature={\externalfigure[dummy]\\Michael Ash}
       ]


     Thank you very much for the invitation I am truly honored by the
     opportunity and delighted to attend. I look forward to meeting
     you.  Thank you again for the invitation.


   \stopletter

\stoptext



--
Michael Ash, Chair, Department of Economics
Professor of Economics and Public Policy         
University of Massachusetts
Amherst, MA 01003
Email mash@econs.umass.edu
Tel +1-413-545-2590 Twitter @michaelaoash