Please do not use this tag for general LaTeX questions. {latex3} is about the new material being developed by the LaTeX3 project. This includes the expl3 programming language along with higher-level concepts such as xparse and xtemplate.
latex3 is about the new material being developed by the LaTeX3 Project. LaTeX3 is currently a series of packages used with LaTeX2e, and so questions in this category will almost all be about using LaTeX3 concepts with LaTeX2e. This includes the expl3 programming language along with higher-level concepts such as xparse and xtemplate.
Please do not use this tag for general LaTeX questions.
