How to define a command to make new commands with numbers in the name

Question

I'd like to create a command which is currently beyond my capabilities so I was wondering if anyone around here could help me out.

What I'm looking to do is define a new command similar to the following:

\cmd{reference001}{Title}{text A}{text B}{text C}

This command would then create a new command called \reference001 which would display:

However, I would also like the \cmd command to define other new commands that will display only the parts of the input. E.g., it should generate a \reference001title command that will display Title and a \reference001partB that will display text B, etc.

Importantly, I'd really like to have numbers in my command name (which is possible as presented in this answer). I've put together what I've tried so far below, but I'm having trouble getting rid of all errors and particularly, with getting numbers to work as part of the command names.

To accomplish this, I've also looked at defining a custom label/ref system (via this question) which would be a perfectly valid solution for my purposes too. E.g., the \cmd above would then create multiple labels which could be referenced as \ref{reference001}, \ref{reference001partA}, etc. However I couldn't get that to work either.

---

\documentclass{article}

\newcommand{\cmd}[5]{
    \expandafter\newcommand\csname #1\endcsname{
        \textbf{#2}

        \textbf{\textit{Part A:}} #3

        \textbf{\textit{Part B:}} #4

        \textbf{\textit{Part C:}} #5
    }
    \expandafter\newcommand\csname #1title\endcsname{#2}
    \expandafter\newcommand\csname #1partA\endcsname{#3}
    \expandafter\newcommand\csname #1partB\endcsname{#4}
    \expandafter\newcommand\csname #1partC\endcsname{#5}
}

\begin{document}

    \cmd{reference}{Title}{text A}{text B}{text C}

    \reference

    \referencepartA

    \referencepartB

    \referencepartC

\end{document}

Answer 1

If you don't need line breaking on your text, this could be the core of the \cmd you might envision.

\documentclass[12pt]{article}
\usepackage{etoolbox}
\usepackage[usestackEOL]{stackengine}
\newcommand\cmd[5]{%
  \csdef{#1title}{#2}%
  \csdef{#1partA}{#3}%
  \csdef{#1partB}{#4}%
  \csdef{#1partC}{#5}%
  \csdef{#1}{%
    \Longunderstack[l]{
      \textbf{#2}\\
      \textbf{\textit{Part A}:} #3\\
      \textbf{\textit{Part B}:} #4\\
      \textbf{\textit{Part C}:} #5\strut
    }%
  }%
}
\cmd{reference001}{Title}{text A}{text B}{text C}
\begin{document}
Here is ``\csuse{reference001partB}'' and here is the full reference:

\csuse{reference001}
\end{document}

Answer 2

You can implement a macro \CallMacro that takes advantage of brace delimited arguments and does the \csname..\endcsname-job for you while flipping around macro arguments as needed - no fancy packages needed:

\documentclass{article}
%%----------------------------------------------------------------------
%% Put a control sequence token in place instead of the string denoting
%% its name:
%%......................................................................
%%  \CallMacro<emptiness or tokens other than braces>{<Name of Control Sequence>}
%%
%% yields:
%%
%%  <emptiness or tokens other than braces>\Controlsequence
%%
%% E.g.,
%%
%%   \CallMacro foo{bar} -> foo\bar
%%   \CallMacro{bar} -> \bar
%%   \CallMacro\newcommand*{wEirdName}[1]{Arg 1: (#1)}
%%       -> \newcommand*\wEirdName[1]{Arg 1: (#1)}
%%
\newcommand\CallMacroIII[2]{#2#1}%
\newcommand\CallMacro{}\long\def\CallMacro#1#{\romannumeral\CallMacroII{#1}}%
\newcommand\CallMacroII[2]{%
  \expandafter\CallMacroIII\expandafter{\csname#2\endcsname}{0 #1}%
}%
%
\newcommand\cmd[5]{%
  \CallMacro\newcommand{#1}{%
    \vtop{%
      \hbox{\noindent\textbf{#2}\strut}%
      \hbox{\textbf{\textit{Part A: }}#3\strut}%
      \hbox{\textbf{\textit{Part B: }}#4\strut}%
      \hbox{\textbf{\textit{Part C: }}#5\strut}%
    }%
  }%
  \CallMacro\newcommand{#1title}{#2}%
  \CallMacro\newcommand{#1partA}{#3}%
  \CallMacro\newcommand{#1partB}{#4}%
  \CallMacro\newcommand{#1partC}{#5}%                 
}%
\begin{document}
\cmd{reference001}{Title}{text A}{text B}{text C}

\verb|\CallMacro{reference001}|:
\CallMacro{reference001}

\hrulefill

\verb|\CallMacro{reference001title}|:
\CallMacro{reference001title}

\hrulefill

\verb|\CallMacro{reference001partA}|:
\CallMacro{reference001partA}

\hrulefill

\verb|\CallMacro{reference001partB}|:
\CallMacro{reference001partB}

\hrulefill

\verb|\CallMacro{reference001partC}|:
\CallMacro{reference001partC}

\end{document}