Hi again. Is there some preferred style for referring to a family of function variants? For example, from xpeek: % \begin{macro}[aux]{\@@_if_in:NNTF} % \begin{arguments} % \item Token-list to search through (the “haystack”) % \item Token to search for (the “needle”) % \end{arguments} % Among the \cs{tl_if_in:**\textit{TF}} conditionals % defined in \pkg{expl3}, \cs{tl_if_in:NNTF} is missing. % But since that’s the functionality I need, define it: % \begin{macrocode} Is “\tl_if_in:**TF” (with or without “TF” being italicized) a recognizable, non-ambiguous way to refer to those functions as a set, or is there a nomenclature already in use that I should rather adopt? —Joel