Let me see if I can make a working definition for inside, outside, in-fighting and out-fighting.

Assuming that a boxer has an arm extended and the opponent's face is at the tip of the first boxer's fist. Then we draw an imaginary line from the first boxer's elbow down to the floor. We can designate the space from the opposing fighter to the imaginary line as inside and then the space from the imaginary line to the boxer with the extended arm as outside. In-fighting and out-fighting is then defined by these spaces.

A boxer is in-fighting when in the inside and out-fighting when outside. Each style follows different principles to be effective. In in-fighting, a fighter try to keep as close as possible to the adversary while in a low stance consequently leaning forward in order to inflict maximum damage. Trying to keep close is in a way a defensive strategy because if the opponent isn't use to punching in a confined space then a boxer inside won't receive any punches. On the other hand, in out-fighting a fighter tries to keep the opponent at the edge of their reach and hopefully keep the opponent away in order to receive minimum damage and inflict maximum damage.

Given these definitions, stepping-in isn't unique to in-fighting because both out-fighters and in-fighters try to get into their range. If you deliver jabs to get inside it isn't in-fighting yet but a technique to get into range.

Did I get it correct?

Also, I have other things that I need help with.

(1) out-boxers are often considered as defensive orriented, can they be considered as offensive? Given the discussion about steppin-in by one of our members, a boxer can move forward to get into their firing range while keeping their opponents at arm's length. (e.g. Paul Williams )

(2) For an in-fighter, is jabbing your way inside the best way to get into range?