# Siyuan > ## Pages - [What is a Content Block](20200923234011-ieuun1p-20210808180303-6yi0dv5-20200924101106-19z4kaa.md): "Content block" refers to a piece of content, and each piece of such content is identified by a globally unique ID. T... - [Navigate in the Content Block](20200923234011-ieuun1p-20210808180303-6yi0dv5-20200924101200-gss5vee.md): There are two types of links in the document content: - [Content Block Type](20200923234011-ieuun1p-20210808180303-6yi0dv5-20200924101225-k254i8g.md): Hover the mouse over the content block and the corresponding icon will appear on the left side of the content block. ... - [Ref Content Block](20200923234011-ieuun1p-20210808180303-6yi0dv5-20200924101256-f8b1sbi.md): Entering`((`will trigger the content block quotation search, continue to enter as the search keyword, use the up an... - [Embed Content block](20200923234011-ieuun1p-20210808180303-6yi0dv5-20201117112518-dott91x.md): The embed content block is mainly used to summarize the required content blocks, use`{{`and`}}`to wrap SQL script... - [Conversion of Document and Heading](20200923234011-ieuun1p-20210808180303-6yi0dv5-20201210233038-3xr19g5.md): The heading block and the document block have a natural correspondence, because: - [Content Block Attribute](20200923234011-ieuun1p-20210808180303-6yi0dv5-20210613191509-cbkxcbz.md): Attributes exist in the form of key-value pairs. We can enrich the connotation of the content block by setting attrib... - [Content Block](20200923234011-ieuun1p-20210808180303-6yi0dv5.md) - [Theme](20200923234011-ieuun1p-20210808180303-axh6q1d-20200924095938-a9p5450.md): 1. Get the theme from somewhere and unzip it - [Icon](20200923234011-ieuun1p-20210808180303-axh6q1d-20200924100110-vcg96wy.md): 1. Get the icon and unzip - [Custom Appearance](20200923234011-ieuun1p-20210808180303-axh6q1d.md) - [Formatting elements](20200923234011-ieuun1p-20210808180303-h361q1i-20200924093441-ft2rhps.md): - Please Start Here - [Editor](20200923234011-ieuun1p-20210808180303-h361q1i.md): - Editing and typesetting based on content blocks - [Type filtering](20200923234011-ieuun1p-20210808180303-l3qg72k-20201222100222-q47d64s.md): -`d`Document block (Only search on the document name, will not search for the document containing content blocks) - [Database table](20200923234011-ieuun1p-20210808180303-l3qg72k-20201222100339-i5hzcph.md): This table is used to store content block data. - [Query syntax](20200923234011-ieuun1p-20210808180303-l3qg72k-20220415232231-pqcizol.md): Global search Ctrl+P supports advanced search through query syntax, in order to implement some logical op... - [Advanced search](20200923234011-ieuun1p-20210808180303-l3qg72k.md) - [Storage](20200923234011-ieuun1p-20210808180303-v9awwp0-20210721112159-9p645xm.md): The cloud storage space is`8G`, divided into three parts: - [Data Sync](20200923234011-ieuun1p-20210808180303-v9awwp0-20210721112206-mhr9wxi.md): Data synchronization refers to keeping the`workspace/data/`folder data consistent on multiple devices, including as... - [Data Backup](20200923234011-ieuun1p-20210808180303-v9awwp0-20210721112211-fwc1x43.md): Backup refers to encrypting and copying all files in the`workspace/data/`folder to the`workspace/backup/`folder. - [End-to-end Encryption](20200923234011-ieuun1p-20210808180303-v9awwp0-20210721112229-fp97j3c.md): SiYuan will encrypt data before backup and synchronization, and the encrypted data can be safely transmitted and host... - [Assets Serving](20200923234011-ieuun1p-20210808180303-v9awwp0-20210721160238-yvhbh0h.md): SiYuan provides cloud assets serving, which is mainly used to copy documents and asset files to platforms such as WeC... - [Limitations](20200923234011-ieuun1p-20210808180303-v9awwp0-20220105101227-n5zpr1a.md): - During synchronization or backup, single file transfer larger than 100MB is not supported - [Cloud](20200923234011-ieuun1p-20210808180303-v9awwp0.md) - [Bookmark and Tag](20200923234011-ieuun1p-20210808180303-xaduj2o-20200924100635-ms0p9lb.md): If you need to "favorite" content blocks, please open the attribute panel through the block icon menu, and then you c... - [Kernel parameter](20200923234011-ieuun1p-20210808180303-xaduj2o-20200924100717-yzwzn64.md): Used to specify the workspace folder path, the default value when not specified is`~/Documents/SiYuan/`. - [Assets](20200923234011-ieuun1p-20210808180303-xaduj2o-20200924100744-br924ar.md): Attachments inserted through the editor will be regarded as asset files and will be placed in the workspace data/asse... - [Import and Export](20200923234011-ieuun1p-20210808180303-xaduj2o-20200924100808-j9sddk9.md): SiYuan supports importing Markdown files. So if you need to import data from other note-taking software, please conve... - [Window and Tab](20200923234011-ieuun1p-20210808180303-xaduj2o-20200924100906-0u4zfq3.md): SiYuan supports multiple windows and multiple tabs, so that you can edit and view documents easily. - [Shortcuts](20200923234011-ieuun1p-20210808180303-xaduj2o-20200924100950-9op5xi1.md): | Name | Shortcuts | Memo | - [Use on browser](20200923234011-ieuun1p-20210808180303-xaduj2o-20201004194026-s8h2cog.md): SiYuan Desktop is an standalone application packaged based on [Electron](https://www.electronjs.org), but this is not... - [Template snippet](20200923234011-ieuun1p-20210808180303-xaduj2o-20201204184532-3qm9l8n.md): The template snippet is used to quickly insert the previously set text content at the cursor caret position, and it s... - [Docker hosting](20200923234011-ieuun1p-20210808180303-xaduj2o-20201227201128-m1wrouw.md): The easiest way to serve SiYuan on a server is to deploy it through Docker. - [Kernel API](20200923234011-ieuun1p-20210808180303-xaduj2o-20201227201751-gv0fpx2.md): Please refer to [API Doc](https://github.com/siyuan-note/siyuan/blob/master/API.md). - [Daily notes](20200923234011-ieuun1p-20210808180303-xaduj2o-20210110181011-fbhoesf.md): We can quickly create a document through the daily note. The entry of the daily note function in the top toolbar look... - [PDF annotation](20200923234011-ieuun1p-20210808180303-xaduj2o-20210127203829-qe2mzof.md): After the PDF file is uploaded and inserted through the editor, the PDF will be placed in the assets folder, and a li... - [Hyperlink](20200923234011-ieuun1p-20210808180303-xaduj2o-20210331201142-4g923es.md): If you need to pull up the SiYuan desktop application in other places (such as a browser or software that supports hy... - [Web Clipping](20200923234011-ieuun1p-20210808180303-xaduj2o-20210505164949-c085p1d.md): "Web Clipping" refers to copying the content on the Web page to SiYuan, and keeping its original format as much as po... - [Data history](20200923234011-ieuun1p-20210808180303-xaduj2o-20210615213222-vs5tzbd.md): Data history is mainly used to ensure data security, and even if a misoperation occurs, data can be rolled back throu... - [Widgets](20200923234011-ieuun1p-20210808180303-xaduj2o-20210824202056-udkf7wg.md): The widget is a static webpage served by SiYuan Kernel. It accesses data through API and renders it through``. - [Virtual reference](20200923234011-ieuun1p-20210808180303-xaduj2o-20211010212318-3wx2kqb.md): Virtual reference is a kind of "block ref" that is automatically detected based on the anchor text of the existing bl... - [General Operations](20200923234011-ieuun1p-20210808180303-xaduj2o.md) - [Please Start Here](20200923234011-ieuun1p.md): In SiYuan, the only important core concept is Content block. The content block can be formed through the formatting f... - [Privacy Policy and User Agreement](20200923234602-gy54e67.md): SiYuan's privacy policy document to declare its commitment to user privacy protection. Last updated February 9, 2022. - [Frequently Asked Questions](20200923234731-h3zkwm2.md): The data is saved in the workspace folder (the default is in the user's home directory Documents/SiYuan, which can be... - [Acknowledgements](20201121224345-rc27qvo.md): SiYuan is made possible by the following open source projects. - [Data Security](20210117215840-jcl17fx.md): Data security is mainly divided into two aspects: