What are the links/tags/bookmarks starting with "E" in vim's help docs?

user_1494725 0
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In Vim's :help, there are many links/tags/bookmarks starting with E. For example, typing :help E355 takes you to a list of all of Vim's options. But there are hundreds of "E" style links/tags/bookmars. What are they, and why are they in the format "E" + number?

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2 Answers

E355 is an error id, useful for looking up the explanation of any error you might encounter.

Many of them are rather cryptic, though. Doing :help E355, for example, leads to the following, which is not very helpful:

                                                        E355
A jump table for the options with a short description can be found at |Q_op|.

See :help message.txt.

user_5468610

They are error tags. From 02.8 Finding help

If you see an error message that you don't understand, for example:

    E37: No write since last change (use ! to override)

You can use the error ID at the start to find help about it:

    :help E37
user_856960
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