Mashups in EMML : Writing Mashups in EMML : Adding Metadata to Mashups : <presto:macro-meta> : <help>
<help>
User assistance, in several forms, for the custom block for this macro. You can provide three types of user assistance:
*A tooltip for the block that appears in the Wires Blocks menu.
*A tooltip for an input parameter that appears as a property in the Wires Block Properties pane.
*A help topic, written as an HTML page, that opens from the ? button in the Wires Block Properties pane.
See Add Tooltips and Help in Custom Blocks for examples.
Can Contain
Any text that is valid in XML for the tooltip for this block or this parameter, depending on the context for this element.
Allowed In
Attributes
Name
Required
Description
url
An absolute or relative URL to the HTML page that is the help topic to open for this block. This help topic opens from the ? button in a separate browser window. See Add Tooltips and Help in Custom Blocks for more information and examples.
Note:  
This attribute is only applicable for <presto:help> within <presto:block>.
There are two possible forms to use for relative URLs to help topics:
*Relative to the Presto Server = must begin with /. There are two ways to host these HTML pages:
*/presto/files/some/path/myHelp.html for help files that have been uploaded to Presto. This is a best practice.
Your Presto administrator can host these HTML files in Presto by uploading them in the Admin Console. Use the URL shown above with the path and file name assigned by your Presto administrator.
*/some/path/in/app-server/myHelp.html for help files that are hosted in the same application server as the Presto Server.
*Relative to PrestoHelp = some/path/to/presto-help.html
Relative paths that do not begin with / are reserved for Presto online help for the built-in blocks in Wires.
key
Reserved for future use.
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