The Gaming Den

i searched the whole thing till the comments below and couldnt find a definition on this sites forum post of races of war. i fail at control f, i suppose.
Also sorry about the off topic bit, ill take it somewhere more applicable.

hey guys, new here, but in multiple of frank and K's variants "tomes" ive seen something referring to having "the edge" on an oponent, im not familiar with this rule and was wondering if you could help me out with a definition of what it is and how it works. any help would be app...