FidoNet control paragraphs (a.k.a. “kludge lines”) are how extensible message metadata is shared among FidoNet nodes.
Synchronet and SBBSecho have extended FidoNet messages with the following control paragraphs:
|COLS: n||Specified width (positive decimal number, in columns) of message author's editor or terminal; potentially useful when re-flowing/wrapping message text for display|
|BBSID: id||QWK BBS ID (1-8 alphanumeric characters) of originating BBS, when applicable; for routed QWKnet messages, the BBS ID may be prepended with slash-separated hop-IDs (e.g. “hub-id/bbs-id”)|
|NOTE: info||Message text editor name and version information (not originated by Synchronet/SBBSecho)|