Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Favorites infavorites:mine
infavorites:1234
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
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Results tagged with Search options user 20643

Custom Fields are fields that can hold arbitrary extra information known as meta-data.

1
vote
The functionality may not have been added until after 3.1. The Codex refers to the latest version of WordPress. When in doubt, upgrade.
answered Apr 8 '13 by Matt