\documentclass{article}
\usepackage{xparse,}
\ExplSyntaxOn
\prop_new:N \l_md_dim_prop
\prop_new:N \l_md_skip_prop

\prop_put:Nnx \l_md_dim_prop { width } { 2cm }
\prop_put:Nnx \l_md_skip_prop { above } { 1cm~plus~0.2cm }
\NewDocumentCommand \UseLength { m m }
 {
   \prop_get:cn { l_md_#1_prop } { #2}
 }
\NewDocumentCommand \xUseLength { m m }
 {
  \quark_if_no_value:nTF
    {\prop_get:cn { l_md_#1_prop } { #2} }
    { \prop_get:cn { l_md_#1_prop } { #2} }
      { 0pt }
%\prop_get:cnNTF
%      { l_md_#1_prop } { #2 }

\documentclass{article}
\usepackage{xparse,}
\ExplSyntaxOn
\prop_new:N \l_md_dim_prop
\prop_new:N \l_md_skip_prop

\prop_put:Nnx \l_md_dim_prop { width } { 2cm }
\prop_put:Nnx \l_md_skip_prop { above } { 1cm~plus~0.2cm }
\NewDocumentCommand \UseLength { m m }
 {
   \prop_get:cn { l_md_#1_prop } { #2}
 }
\NewDocumentCommand \xUseLength { m m }
 {
  \quark_if_no_value:nTF
    { \prop_get:cn { l_md_#1_prop } { #2} }
    { \prop_get:cn { l_md_#1_prop } { #2} }
    {  0pt\msg_term:n {no~entry~in~prop} }

Reliable source, n.:
	The guy you just met.

paulo@alexandria ~$

\documentclass{article}

\usepackage{pgf}


\begin{document}

\begin{pgfpicture}{0bp}{0bp}{145.790405bp}{322.583481bp}
\begin{pgfscope}
\pgfsetlinewidth{1.0bp}
\pgfsetrectcap
\pgfsetmiterjoin \pgfsetmiterlimit{10.0}
\pgfpathmoveto{\pgfpoint{82.903947bp}{190.809268bp}}
\pgfpathcurveto{\pgfpoint{82.903947bp}{166.812861bp}}{\pgfpoint{64.457185bp}{147.359919bp}}{\pgfpoint{41.701966bp}{147.359919bp}}
\pgfpathcurveto{\pgfpoint{18.946748bp}{147.359919bp}}{\pgfpoint{0.500001bp}{166.812861bp}}{\pgfpoint{0.500001bp}{190.809268bp}}

My mind is a potato field ...

oxford:~ paulo$

\documentclass{amsart}
\usepackage{amsthm}
\newtheorem{theorem}{Theorem}
\makeatletter
\let\oldfig\thefigure
\newcommand{\thmfig}[1]{%
\renewcommand{\figurename}{Figure for Theorem}%
\renewcommand{\thefigure}{\ref{#1}}%
\caption{}
\addtocounter{figure}{-1}
}
\renewcommand{\thefigure}{\oldfig}%
\makeatother
\usepackage[demo]{graphicx}
\usepackage{lipsum}
\begin{document}
 \begin{theorem}[Pythagoras] \label{thm:pythagoras}
For a right triangle ABC, right angled at $A$, $a^2 = b^2 + c^2$.
 \end{theorem}

\newcommand{\thmfig}[2][]{%
\renewcommand{\figurename}{Figure for Theorem}%
\renewcommand{\thefigure}{\ref{#2}}%
\caption{#1}
\addtocounter{figure}{-1}
}

From Slashdot:
First time accepted submitter PAjamian writes "Maintainers of the Anaconda installer in Fedora have taken it upon themselves to show passwords in plaintext on the screen as they are entered into the installer. Following on the now recanted statements of security expert Bruce Schneier, Anaconda maintainers have decided that it is not a security risk to show passwords on your screen in the latest Alpha release of Fedora 19. Members of the Fedora community on the Fedora devel mailing list are showing great concern over this change in established security protocols."

Psmith, the TeX bot, in fixed font mode: Let's take a look at the last cricket results:

- Sussex 421/7 * v Warwickshire 453/10
- Middlesex 263/1 &  166/10 * v Surrey 338/10
- Derbyshire 10 * v New Zealanders 289/5
- Leicestershire 289/10  v Gloucestershire 76/6 *
- Bermuda v United States of America 206/9 *
- Italy 127/9 * v Nepal
- Oman v Uganda 163/9 *
- Sunrisers Hyderabad 43/2 * v Delhi Daredevils 80/10
- Hong Kong Under-19s v United Arab Emirates Under-19s
- Nepal Under-19s v Qatar Under-19s

\documentclass[demo,hyperref={pdfpagelabels=false}]{beamer}
\mode<presentation> {\usetheme{Berlin}}
\usepackage{times}
\usepackage{amsmath,amsthm, amssymb, latexsym}
\boldmath
\usepackage{wrapfig, graphicx, upgreek, lipsum}
\usepackage[english]{babel}
\usepackage[latin1]{inputenc}
\usepackage[orientation=landscape,size=a0,scale=1.4,debug]{beamerposter}

\begin{document}
\begin{frame}{}
   \begin{columns}[t]
   \begin{column}{.30\linewidth}
   \begin{block}{Monte Carlo Technique}
      When we have..accuracy through looking at the proportion of points inside and outside the circle.

Psmith, the TeX bot, in fixed font mode:

temperature | Berlin
18 °C  (wind chill: 18 °C)
(42 minutes ago)

  |  |   |
low: 3 °C
Sat, May 4, 5:45am, ... | average high:  | 18 °C
average low:  | 9 °C | high: 23 °C
Mon, May 6, 2:00pm, ...
 |   |
name | EDDT  (Berlin-Tegel Airport)
relative position | 7 km NW  (from center of Berlin)
relative elevation | 37 meters (below center of Berlin)
local time | 7:32:02 pm CEST  |  Saturday, May 4, 2013
local sunlight | sun is above the horizon
azimuth: 285°  (WNW)  |  altitude: 9°

        *  *  * *
        *|_*|_*|*|_
    .-'`|* |* |*|  `'-.
    |`-.............-'|
    |    P E T E R    |
    \   _  .-.   _    /
  ,-|'-' '-'  '-' '-'`|-,
/`  \._             _./  `\
'._    `"""""""""""`    _.'
   `''--...........--''`
            ) (
        .--'   '--.
       /           \
       `'---------'`

Psmith, the TeX bot, in fixed font mode: Let's take a look at the last cricket results:

- Sussex 421/7 * v Warwickshire 453/10
- Middlesex 283/2 &  166/10 * v Surrey 338/10
- Derbyshire 24/1 * v New Zealanders 289/5
- Leicestershire 289/10  v Gloucestershire 174/10 *
- Bermuda 87/1 * v United States of America 220/9
- Italy 127/9  v Nepal 129/2 *
- Oman 62/2 * v Uganda 163/9
- Hong Kong Under-19s v United Arab Emirates Under-19s
- Nepal Under-19s v Qatar Under-19s
- Mumbai Indians v Chennai Super Kings