Without further ado, the following was found:

Issue:    printf-like → B<printf>(3)-like

"The format is interpreted in the usual printf-like way.  Ordinary characters "
"are directly copied, tab, newline, and backslash are escaped using \\[rs]t, "
"\\[rs]n, and \\[rs]\\[rs], a percent sign is represented by %%, and "
"otherwise % indicates a conversion.  The program B<time> will always add a "
"trailing newline itself.  The conversions follow.  All of those used by "
"B<tcsh>(1)  are supported."