• Input keywords search from title, content, or comment. • Use space to separate multiple keywords. For example, “w3c organization” means items containing “w3c” and “organization”. • Use double quotes to demark a complete phrase, a literal double quote can be escaped by doubling. For example, “"Tom ""loves"" Mary."” means items containing “Tom "loves" Mary.” • Use minus sign to exclude a keyword. For example, “-virus” means items without “virus”. • Use “<command>:<keyword>” to specify a special search condition. A minus sign can be prefixed for exclusion or reversion. Available commands include: • mc: each subsequent keyword matches case-sensitively. For example, “mc: CIA FBI -mc: president” means items containing “CIA” and “FBI” case-sensitively, and “president” case-insensitively. • re: each subsequent keyword is treated as a regular expression. For example, “re: \bcolou?r\b -re: 1+1=2” means items that match regular expression “\bcolou?r\b” and contain keyword “1+1=2”. • id: item whose ID equal to the keyword (or match the regular expression). Multiple values are “or”-connected. For example, “id:2020 id:2021” means items of ID “2020” or “2021”; “-id:2020” means items whose ID is not “2020”. • type: items whose type equal to the keyword (or match the regular expression). Multiple values are “or”-connected. Available types are “” (page), “bookmark”, “file”, “note”, etc. For example, “type: type:bookmark” means items whose type is page or bookmark. • title: items whose title contains the keyword. • content: items whose fulltext contains the keyword. • comment: items whose comment contains the keyword. • tc: items whose title or comment contains the keyword. • tcc: items whose title, fulltext, or comment contains the keyword. • index: items whose index file path contains the keyword. • source: items whose source URL contains the keyword. • icon: items whose icon URL contains the keyword. • charset: items whose charset contains the keyword. • create: items whose create time matches the condition. Multiple values are “or”-connected. The time condition is an interval with 0-17 digits, followed by a minus sign optionally, and then followed by 0-17 digits. The two 17-digit numbers means the year (4 digits), month (01-12), day (01-31), hours (00-59), minutes (00-59), seconds (00-59), and milliseconds (000-999) in local datetime. Each omitted digit is assumed to be a “0”, except that “999...” is assumed if the end datetime is totally omitted. For example, “create:2014-2015” means since 2014 until 2015; “create:-201309” means before Sep 2013; and “create:20110825” means after Aug 25, 2011. • modify: items whose modify time matches the condition. Multiple values are “or”-connected. Time format is same as create. • marked: marked items. • locked: locked items. • location: items with geolocation information. • file: items whose filename contains the keyword. • root: items under the item of ID. Multiple values are “or”-connected. • book: items in the specific scrapbook (by ID). Multiple values are “or”-connected. • sort: sort search results using the specific condition, which can be id, title, comment, file, content, source, type, create, or modify. For example, “sort:id -sort:modify” means sorting by ID in acending order and then sorting by modify time in descending order. • limit: set a limit on the search result number. For example, “limit:10” means showing the first 10 results. “-limit:” means unsetting the limit.