New posts in Optional Arguments

Add optional argument to newcommand for integration dx

Problem with newcommand and the optional argument

Ignore specific lines when numbering lines

Looseness for Bezier controls. Or how to bend in circularly symmetric tikz-drawings (without bend left, etc.)

Are all commands with an optional argument fragile?

Passing optional arguments to \printbibliography as variables

Use second argument for optional first argument if not provided in macro

\newcommand: Using one parameter as the default for the other

Euler and minus sign

Why do people specify date as an option for \usepackage?