Seconding @pdworkin.
Most likely in your particular case, someone felt that you were justifying a point by ascribing to a belief system (any belief system) that made fundamental assumptions about the nature of what you were discussing, even though those fundamental assumptions are strictly a part of your belief structure.
For example, arguing about a program diference, w/ the assumption that Windows is better. Or arguing about abortion, with the assumption that life begins at such and such point. Or arguing about the origin of man, with the assumption that God exists. Or arguing about Obama’s policies, w/ the assumption that his overall goals are right, or wrong.
In these examples there is no winner or loser, because the discussion is happening based on entirely different underlying fundamental assumptions about the nature of the isssue that are entirely different, as they are based in different belief structures.
..your dogma is that belief structure, and the rules and attributes of it.
Thus, curb your dogma suggests that you try to set aside you’re belief structure for a minute so as to continue the conversation with a more open approach..