It was mentioned in the
versions.txt file at the time of the changes.
mIRC v6.2
5.Extended /did to support a long list of ids as opposed to only up to 256 characters.
mIRC v6.17
102.Can now specify a range of ids with one /did command by using a dash, eg. /did -b test 1-5,6,7-8,9-11,10
