定例に従って、式は午前十時に始まった。
In keeping with established custom, the ceremony began at ten a.m.
新年の挨拶回りは、この会社の定例となっている。
Making New Year's rounds has become established practice at this company.
定例を破って、今年は社長自らが挨拶に立った。
Breaking with precedent, the president gave the address himself this year.