% example file to change the style of LaTeX
% This should be last \usepackage{} in preamble.
% Tony Roberts, May 2004 -- May 2020
% http://orcid.org/0000-0001-8930-1552
% first colour for pdflatex
\usepackage[usenames,dvipsnames]{color}
\IfFileExists{microtype.sty}{\usepackage{microtype}}{} 
% and fix some pdf colour problems
\IfFileExists{pdfcolmk.sty}{\usepackage{pdfcolmk}}{} 
% second test for a5paper
\ifdim\paperwidth=148mm 
  \usepackage[a5paper,margin=6mm,bmargin=14mm]{geometry}
  \fi
% invoke American Maths Society packages
\usepackage{amsmath,amsthm,amssymb} 
% penultimately load colour hyperref
\usepackage[colorlinks,allcolors=RoyalBlue]{hyperref}

% lastly invoke cleveref
\usepackage[capitalise,nameinlink,noabbrev]{cleveref}
\crefname{equation}{}{}
% Default "Item" useless, use enumitem and ref=
% Nested enumerates inherit the first level ref=
\crefname{enumi}{}{}
\crefname{enumii}{}{}
\crefname{enumiii}{}{}
\crefname{enumiv}{}{}
% if usepackage{showkeys}, then patch in a link
\ifcsname SK@def\endcsname%
    \SK@def\cref#1{\SK@\SK@@ref{#1}\SK@cref{#1}}%
    \fi

%perhaps use sans-serif for title info
\let\LaTeXmaketitle\maketitle
\renewcommand{\maketitle}{{\sf\LaTeXmaketitle}}

\pagestyle{headings}
% crunching MakeUppercase is very naughty
\renewcommand{\MakeUppercase}[1]{\color{OliveGreen}\textsf{#1}}

% maybe colour section headers blue
\let\LaTeX@startsection\@startsection 
\renewcommand{\@startsection}[6]{\LaTeX@startsection%
{#1}{#2}{#3}{#4}{#5}{\color{blue}\raggedright #6}} 
\renewcommand{\abstractname}{\color{blue}Abstract}
\renewcommand{\figurename}{\color{Sepia}Figure}
\renewcommand{\tablename}{\color{Sepia}Table}

 
% Rob J Hyndman (2011) recommends these float settings
% http://robjhyndman.com/researchtips/latex-floats/
\setcounter{topnumber}{2}
\setcounter{bottomnumber}{2}
\setcounter{totalnumber}{4}
\renewcommand{\topfraction}{0.85}
\renewcommand{\bottomfraction}{0.85}
\renewcommand{\textfraction}{0.15}
\renewcommand{\floatpagefraction}{0.7}



%% The above only change the translation from LaTeX -> pdf
%% and so are true style commands.  However, the following
%% (except \vec) provide new logical commands for LaTeX and
%% so should really be in a separate "mydefns.sty" file
% useful theorem and friends
\newtheorem{theorem}{Theorem}
\newtheorem{corollary}[theorem]{Corollary}
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{definition}[theorem]{Definition}
\newtheorem{assumption}[theorem]{Assumption}

% useful partial derivatives and vec
\newcommand{\D}[2]{\frac{\partial #2}{\partial #1}} 
\newcommand{\DD}[2]{\frac{\partial^2 #2}{\partial #1^2}} 
\renewcommand{\vec}[1]{\boldsymbol{#1}}
% a poor-man's auto-multi-line maths
\newcommand{\parmath}[2][0.8\linewidth]{\parbox[t]{#1}%
    {\raggedright\linespread{1.2}\selectfont\(#2\)}}

