I have been seeing submission guidelines that reference "industry standard" but I have not been able to locate information as to what that standard is. In one place I found that manuscripts should be in Times New Roman 12 point font, in another that it should be double spaced. One of my friends who publishes an online magazine says that there should be only one space after a period; in one of the seminars I went to 3 years ago I was told it should be 2 spaces. Can anyone tell me where I would find this information, or how I should search?