Issue-related advertisement requirement: rights-issue issuers must disclose application procedures and permit plain-paper applications for IDR holders. Issuers making a rights issue of Indian Depository Receipts must publish an issue-related advertisement disclosing the dispatch date of abridged letters of offer and application forms; centres offering duplicate forms; that eligible IDR holders may apply on plain paper when forms are not received or obtainable; a prescribed plain-paper format with required particulars; that applications may be sent by Speed Post with registration to the issuer's designated official; and that duplicate plain-paper and application-form submissions may be rejected at the issuer's option. The advertisement must run in specified national and regional newspapers at least three days before the issue opens.