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
  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
  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
  newline="<br />"	Convert newlines in textarea to other delimiters	no conversion
  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
• Note: URL parameters passed into HTML form fields must be entity ENCODEd
• 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.
• Note: There is a risk that this variable could be misused for cross-site scripting.
• Related: ENCODE, SEARCH, FormattedSearch, QUERYSTRING

USERINFO - retrieve details about the logged in user

• By default, the retrieved info will be formatted as a comma-separated list comprising the username, wikiusername, and emails.
• Syntax: %USERINFO%
• Expands to: =guest, WikiGuest, =
• you can also use the format parameter to get different formatted results:
• Syntax: %USERINFO{format="$username is really $wikiname"}%
• Expands to guest is really WikiGuest
• The tokens $emails, $username, $wikiname, $wikiusername, and $groups are available for use in the format string.
• Related: USERNAME, WIKINAME, WIKIUSERNAME, TWikiUserAuthentication, ChangeEmailAddress