Format:
This includes what the magazine looks like in every issue, and the design used which defines the magazines overall look.The things that should look the same in every issue include the logo,cover lines, the size of the magazine and department headers.

Formula:
The formula is what actually goes inside of the magazine which is known as the editorial content.Things that contribute towards this are the articles, their length and departments that are in the front and back of the book in every issue, these all contribute to the formula.

Frame:
The frame is the standard size for gutters and outer page margins, however this can vary in different types of magazines,some use the same margin width throughout the magazine;others may vary the width used in certain features in the magazine. The rule of using margins allows consistency in every issue made. 

Function: 
The function is what the magazine is what the magazine is trying to achieve and the message they're trying to send.

Consistency and unity:
This is very important for a magazine to keep consistency in what the magazine looks like, the content and layout so that it appeals to the readers. If the magazine isn't consistent it wont appeal to readers as the look/layout isn't the same in every issue.Unity is also important in a magazine, for example the font and style of the master-head should be same in every issue so that the magazine is recognisable to the readers. Also the frame should be same in every issue and not change throughout the issue as this could make the magazine un-popular.