I'm trying to make a template for writing my personal mathematical notes based on the amsart class. I copied this file (https://www.ams.org/arc/journals/packages/bull/bull_amslatex/journal.tex) and was trimming away the things that I might not need (like multiple authors etc). I found this code in the preamble:
% Blank box placeholder for figures (to avoid requiring any
% particular graphics capabilities for printing this document).
\newcommand{\blankbox}[2]{%
\parbox{\columnwidth}{\centering
% Set fboxsep to 0 so that the actual size of the box will match the
% given measurements more closely.
\setlength{\fboxsep}{0pt}%
\fbox{\raisebox{0pt}[#2]{\hspace{#1}}}%
}%
}
I am wondering if I should delete it or not. What is the purpose of this code, and is it okay to delete it? I found no difference in the output by excluding it.