Texmaker (free cross-platform latex editor)
These are the 100 most frequent LaTeX commands
Commands - Overleaf, Online LaTeX Editor
macros - naming argument and optional-argument for \def, \newcommand and newenvironment - TeX - LaTeX Stack Exchange
Define LaTeX Command with More than One Optional Arguments | R's Workshop
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A Brief Guide To LaTeX - LaTeX - Library Guides at Penn State University
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How to: add simple new commands to LaTeX to help with writing papers « Robin's Blog
8. Defining Commands
How to Add Command Line Arguments to a Python Script
Commands - Overleaf, Online LaTeX Editor
Latex \newcommand argument - Stack Overflow
How to use \newcommand in LaTeX?
tex core - How to make commands defined by \def behave as strings? - TeX - LaTeX Stack Exchange
Part 4 - Overleaf, Online LaTeX Editor
Defining a newcommand with sub- or superscript and avoiding "double subscript" error - TeX - LaTeX Stack Exchange
LaTeX & Macros: Macros with Optional Arguments - DEV Community
Make LaTeX easier with custom commands – Water Programming: A Collaborative Research Blog
How to interpret the syntax of \newcommand in latex in comparison with the command it defines - Stack Overflow
How to use \newcommand in LaTeX?
macros - naming argument and optional-argument for \def, \newcommand and newenvironment - TeX - LaTeX Stack Exchange
Creating our own commands | LaTeX Beginner's Guide - Second Edition
