Bulletin Board Service from the early 90´s
MicroRun BBS was an ON-LINE service available in two network nodes connected to a phone/radio modem.
MCR BBS was an application developed under Nantucket Clipper Programming language.
Metralha 1313 = Grifu
I used this alias during many years in the old times (also Bad Sector).
more info: http://www.grifu.com