Support OPTIONAL ARGUMENT in user defined macro by \newcommand · Issue #2228 · KaTeX/KaTeX · GitHub
Macros: Difficulty with optional arguments in newcommand
How TeX macros actually work: Part 4 - Overleaf, Online LaTeX Editor
TUGboat, Volume 42 (2021), No. 1 41 \NewDocumentCommand versus \newcommand versus ... Joseph Wright Creating new document comman
Macros
The optparams package
LaTeX Tutorial-Page Setup
How TeX macros actually work: Part 4 - Overleaf, Online LaTeX Editor
macros - \newcommand: Using one parameter as the default for the other - TeX - LaTeX Stack Exchange
macros - Using the compulsory argument for the optional argument? - TeX - LaTeX Stack Exchange
package_new_command_3.png
How to check for optional arguments of macro and modify expansion accordingly? · KaTeX KaTeX · Discussion #3520 · GitHub
macros - How can I differentiate in \newcommand between an unused optional argument and an empty one? - TeX - LaTeX Stack Exchange
How to use \newcommand in LaTeX?
Commands - Overleaf, Online LaTeX Editor
Commands with optional arguments - Wiki
Make LaTeX easier with custom commands – Water Programming: A Collaborative Research Blog
How to use \newcommand in LaTeX?
newcommand with comma separated argument, and optional arguments - LaTeX4technics
Commands with optional arguments - Wiki
Make LaTeX easier with custom commands – Water Programming: A Collaborative Research Blog
Latex Introduction for Beginners | PPT
How to interpret the syntax of \newcommand in latex in comparison with the command it defines - Stack Overflow
macros - naming argument and optional-argument for \def, \newcommand and newenvironment - TeX - LaTeX Stack Exchange
Macros: Optional argument implementation in Newcommand using ifthenelse statement
