# Include Topics and Web Pages Using `%INCLUDE{...}%` Variable
Use the `%INCLUDE{...}%` variable to embed the content of another topic or web page inside a TWiki topic. The whole content or only parts of a page can be included. If needed, set a proxy server in [[TWikiPreferences]].
## Syntax Example
`%INCLUDE{ "page" pattern="reg-exp" rev="2" warn="off" section="clients" PARAMETER1="value" PARAMETER2="Some value"}%`
The `pattern` parameter is optional and allows you to extract some parts of a web page. Specify a %SYSTEMWEB%.RegularExpression that scans from start (`'^'`) to end and contains the text you want to keep in parenthesis, e.g., `pattern="^.*?(from here.*?to here).*"`. You need to make sure that the integrity of a web page is not compromised; for example, if you include a table, make sure to include everything including the table end tag.
The example parameters PARAMETER1 and PARAMETER2 will be defined as a variable within the scope of the included topic. The example parameters shown will result in %PARAMETER1% and %PARAMETER2% being defined within the included topic.
[[VarINCLUDE]] explains the other parameters.
**_Note:_** All text of a topic is included unless it contains a `%STARTINCLUDE%` and `%STOPINCLUDE%`, or you specify a `section` parameter and/or a `pattern` parameter. A pattern will only search between `%STARTINCLUDE%` and `%STOPINCLUDE%`.
## Usage Examples
### 1. Display regression test results in a TWiki page
%INCLUDE{"http://domain/~qa/v1.1/REDTest.log.txt"}%
### 2. Display Google's robot.txt file
%INCLUDE{"http://www.google.com/robots.txt"}%
### 3. Display the current time in Tokyo in a TWiki page
- You type:
- **Tokyo: %INCLUDE\{"http://TWiki.org/cgi-bin/xtra/tzdate?tz=Asia/Tokyo" pattern="^.\*<\\!--tzdate:date-->(.\*?)<\\!--/tzdate:date-->.\*"\}%**
- You get:
- Tokyo:
### 4. Include a topic MyTopic with two parameters
You include the topic with this line
%INCLUDE{ "MyTopic" BETTER="apples" WORSE="Oranges"}%
An example of a very simple MyTopic could contain
* I like %BETTER% better than %WORSE%.
The result would be
- I like apples better than oranges.
### 5. Alert Box using Parameterized Include
Create a topic called AlertBox with the following content:
-----
%STARTINCLUDE%
|
%TITLE% |
|
%MESSAGE% |
%STOPINCLUDE%
-----
Now you can write `%INCLUDE{ "AlertBox" TITLE="Alert" MESSAGE="This a test message" }%` to get this:
The `TITLE=""` and `MESSAGE=""` parameters are passed into the include. Using this approach, you can create a library of boxes in the %USERSWEB% web, such as %USERSWEB%.NoteBox, %USERSWEB%.InfoBox.
**_Related Topics:_** [[VarINCLUDE]], [[UserDocumentationCategory]]