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|  META TOPICPARENT  | 
 name="TWikiVariables"  | 
  
 URLPARAM{"name"} -- get value of a URL parameter  
-  Returns the value of a URL parameter.
  -  Syntax: 
%URLPARAM{"name"}%
  -  Supported parameters:              
               |  Parameter:  |       Description:  |       Default:  |                       "name"  |       The name of a URL parameter  |       required  |                  default="..."  |       Default value in case parameter is empty or missing  |       empty string  |                  newline="<br />"  |       Convert newlines in textarea to other delimiters  |       no conversion  |                  encode="entity"  |       Encode special characters into HTML entities. See ENCODE for more details.  |       no encoding  |                  encode="url"  |       Encode special characters for URL parameter use, like a double quote into %22  |       no encoding  |                  encode="quote"  |       Escape double quotes with backslashes (\"), does not change other characters; required when feeding URL parameters into other TWiki variables  |       no encoding  |                  multiple="on"    multiple="[[$item]]"  |       If set, gets all selected elements of a <select multiple="multiple"> tag. A format can be specified, with $item indicating the element, e.g. multiple="Option: $item"  |       first element  |                  separator=", "  |       Separator between multiple selections. Only relevant if multiple is specified  |       "\n" (new line)  |             
  -  Example: 
%URLPARAM{"skin"}% returns print for a .../view/TWiki/VarURLPARAM?skin=print URL
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  Note: URL parameters passed into HTML form fields must be entity ENCODEd.
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  Note: Double quotes in URL parameters must be escaped when passed into other TWiki variables.   Example: %SEARCH{ "%URLPARAM{ "search" encode="quotes" }%" noheader="on" }%
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  Note: When used in a template topic, this variable will be expanded when the template is used to create a new topic. See TWikiTemplates#TemplateTopicsVars for details.
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  Note: There is a risk that this variable could be misused for cross-site scripting.
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  Notes: 
-  URL parameters passed into HTML form fields must be entity ENCODEd.
  -  Double quotes in URL parameters must be escaped when passed into other TWiki variables.
   Example: %SEARCH{ "%URLPARAM{ "search" encode="quotes" }%" noheader="on" }%
  -  When used in a template topic, this variable will be expanded when the template is used to create a new topic. See TWikiTemplates#TemplateTopicsVars for details.
   
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-  Watch out for TWiki internal parameters, such as 
rev, skin, template, topic, web; they have a special meaning in TWiki. Common parameters and view script specific parameters are documented at TWikiScripts.
  -  If you have 
%URLPARAM{ in the value of a URL parameter, it will be modified to %<nop>URLPARAM{. This is to prevent an infinite loop during expansion.
  -  There is a risk that this variable could be misused for cross-site scripting.
   
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Note If you have %URLPARAM{ in the value of a URL parameter, it will be modified to %<nop>URLPARAM{. This is to prevent an infinite loop during expansion. | 
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