If you use the plus sign in lieu of the word "and" or an ampersand, it's your subconscious telling you that you really like the person. When couples carve their names into trees, they use a plus sign between them. It is used by the College Board in its history tests, and by the Norton Anthology of English Literature. The US-based History Channel uses BCE/CE notation in articles on non-Christian religious topics such as Jerusalem and Judaism.In June 2006, in the United States, the Kentucky State School Board reversed its decision to use BCE and CE in the state's new Program of Studies, leaving education of students about these concepts a matter of discretion at the local level.
In texting, you don't have to end a sentence with any punctuation.
It's totally acceptable to just let it dangle.
So using a period gives a certain air of finality to a statement.
In the later 20th century, the use of CE and BCE was popularized in academic and scientific publications, and more generally by authors and publishers wishing to emphasize secularism or sensitivity to non-Christians, by not explicitly referencing Jesus as "Christ" and Dominus ("Lord") through use of the abbreviation The year numbering system used with Common Era notation was devised by the Christian monk Dionysius Exiguus in the year 525 to replace the Era of Martyrs system, because he did not wish to continue the memory of a tyrant who persecuted Christians.
Numbering years in this manner became more widespread in Europe with its usage by Bede in England in 731.