Your colleagues was careless with back quotes. See ?'`' for a discussion of non-syntactic names. This next transcript shows how to use the back quote to create and then remove an object with a non-symantic name.
> ?which > ?'`' > `females[\"dp\"]` <- 123 > ls(pat="fe") [1] "females[\"dp\"]" > rm(`females[\"dp\"]`) > ls(pat="fe") character(0) > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.