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macros - naming argument and optional-argument for \def, \newcommand and newenvironment - TeX - LaTeX Stack Exchange
Support OPTIONAL ARGUMENT in user defined macro by \newcommand · Issue #2228 · KaTeX/KaTeX · GitHub
Support OPTIONAL ARGUMENT in user defined macro by \newcommand · Issue #2228 · KaTeX/KaTeX · GitHub
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TUGboat, Volume 42 (2021), No. 1 41 \NewDocumentCommand versus \newcommand versus ... Joseph Wright Creating new document comman
Commands - Overleaf, Çevrimiçi LaTeX Editörü
Commands with optional arguments - Wiki
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Macros
Macros: Optional argument implementation in Newcommand using ifthenelse statement
package_new_command_3.png
