Hi Mihai,
one (very bad style) way would be
if (FALSE) {
comment
comment
comment
}
this works only if the enclosed text is syntactically valid r code. that is, you can't have multiline free text comments done this way, neither can you temporarily comment out unfinished and unparsable code. an extension to the parser that would accept multiline start-end comment tags, be it c-style /* */, perl-style =pod =cut, whatever, should be fairly trivial to implement. (the perl-style pod markup is particularly easy to parse, because it suffices to recognize '^=' on a line, no advanced pattern-matching needed.) somewhat surprising there is no such functionality there in r (or is there any?), it would be quite convenient. vQ