New posts in Optional Arguments

How to define a comma separated list of arguments for includegraphics

How to define a command with two optional arguments?

Optional Arguments for Macros Called within Tikz Matrix

Is there a LaTeX recommended standard for commands with optional arguments?

Tabular ignoring optional parameter to \\

Second optional argument for newcommand to be the same of the first in case it is not specified

How to write a macro that takes a variable number of arguments

One `\newcommand` for inserting figures differentiating two cases with/without captions

Patch 2016 xparse to support k-type argument

Using the compulsory argument for the optional argument?