17238989_Intel__Debugger__IDB__Manual__Meaning
[Convention] option ;... option ,... option ... [Meaning] 
A set of three horizontal ellipses indicates that you can enter additional parameters, options, or values. A semicolon, comma, or space preceding the ellipses indicates successive items must be separated by semicolons, commas, or spaces.
Intel® Debugger (IDB) Manual
Meaning