Here are a few LaTeX snippets that I am using in my thesis to help me keep track of things.

A Reading Marker to help with ProofReading

I use this to highlight where in my document I’ve managed to edit up to.

% A reading marker, to help proofreading
\providecommand{\readhere}[2]{\texttt{\hl{\emph{#1:} #2}}\\
\rule{\textwidth}{0.5pt}\\%
}

A “To Do” Marker

This one makes a note in the paragraph margins and marks it with a “TODO”. Some of the code is reused from here.

% Make the fonts small
\setlength{\marginparwidth}{1.3in}
\let\oldmarginpar\marginpar
\renewcommand\marginpar[1]{\-\oldmarginpar[\raggedleft\footnotesize #1]%
{\raggedright\footnotesize #1}}

% Put the margins on the left side
\reversemarginpar

% My TODO macro
\newcommand{\TODO}[1]{%
\marginpar{\textbf{TODO:} \emph{#1}}%
}%