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A check to the minor edit box signifies that only superficial differences exist between the current and previous versions. Examples include typographical corrections, corrections of minor formatting errors, and reversion of obvious vandalism. A minor edit is one that the editor believes requires no review and could never be the subject of a dispute. An edit of this kind is marked in its page's revision history with a lower case, bolded "m" character (m).
By contrast, a major edit is one that should be reviewed for its acceptability to all concerned editors. Any change that affects the meaning of an article is not minor, even if it concerns a single word; for example, the addition or removal of "not" is not a minor edit.
Because editors may choose to ignore minor edits when reviewing recent changes, the distinction between major and minor edits is significant. Logged-in users can set their preferences not to display minor edits. If there is any chance that another editor might dispute a change, the edit should not be marked as minor. (If an editor considers a change to be minor yet conceivably controversial, it is always possible to include "minor" in the edit summary without ticking the "minor edit" box.)
A good rule of thumb is that edits consisting solely of spelling corrections, formatting changes, or rearrangement of text without modification of content should be flagged as minor edits.
How to mark an edit as minor
Below the edit summary field, there is a checkbox that says "This is a minor edit". Most browsers support access keys (keyboard shortcuts); the access key for the minor edit checkbox is i. You can mark and save an edit very quickly by using the access keys for minor edit (i) and save (s).
When filling in the edit summary, you may also press Tab ↹+Space to check the minor edit box quickly.
What to mark as minor changes
- Spelling, grammatical, and punctuation corrections
- Simple formatting (e.g., capitalization, or properly adding italics to non-English words, like folie de grandeur, or titles of certain works, like The Adventures of Tom Sawyer)
- Formatting that does not change the meaning of the page (e.g., moving a picture, splitting one paragraph into two—where this is not contentious)
- Obvious factual errors (e.g., changing "Nixon resigned in 1874" to "Nixon resigned in 1974")
- Fixing layout errors
- Adding or correcting wikilinks, or fixing broken external links and references already present in the article
- Removing obvious vandalism
What not to mark as minor changes
- Adding or removing content in an article
- Adding or removing visible tags or other templates in an article
- Adding or removing references / citations, external links, or categories in an article
- Adding comments to a talk page or other discussion
Things to remember
- Marking a major change as a minor one is considered poor etiquette, especially if the change involves the deletion of some text.
- Consequently, if you are in doubt about whether an edit is minor or not, it is always safer not to mark it as minor.
- Reverting a page is not likely to be considered minor under most circumstances. When the status of a page is disputed, and particularly if an edit war is brewing, then it is better not to mark any edit as minor. Reverting blatant vandalism is an exception to this rule.
- If you accidentally mark an edit as minor when it was in fact a major edit, you should make a second edit, or dummy edit, noting in the dummy's edit summary that the previous edit was major. As a trivial edit to be made for this purpose, just opening the edit box and saving (i.e., changing nothing) will not work. In addition, certain changes will not work if they do not affect the presentation of the page in HTML, such as adding a blank space at the end of a line or a blank line at the end of the page; in these cases the edit is cancelled and the edit summary discarded. However, one can, for example, add an extra space between two words. This will be preserved in the wikitext and recorded as a change, although it will not change the page's appearance when rendered. Do not mark the dummy edit as minor.
- It may be worth communicating any disagreement about what is minor via Talk or a message to the contributor, being careful to avoid a flame war ("I thought your change was a bit more than minor—maybe I am being over-sensitive?"). There is a grey area, and many contributors will appreciate feedback on whether they have gotten it right.
- Marking your change as minor affects how it displays in some editors' watchlists. If, for example, you mark your talk page comments as "minor", then fewer editors are likely to notice your comment.
- The designation of a change as minor or major is not a reflection of how much work went into making the change. For instance, even if you spent several hours finding and fixing problems with the formatting of references, the change would still be minor. Editors should not feel that marking a change as minor devalues their effort.
Administrators and rollbackers can semi-automatically revert the edits of the last editor of a page; all such rollback reversions are marked as minor by the wiki software. The intended use of the rollback feature is for cases of vandalism, where the act of reverting any vandalism should be considered minor (and can be ignored in the recent changes list).
Additionally, bot accounts usually mark their edits as minor in addition to the "bot" flag.