<param> tag

The <param> tag identifies a plug-in parameter's name and value. The attributes of the <param> tag are:
Specifies the name of the plug-in parameter. Each plug-in Java™ class defines the set of parameter names it will accept.
Specifies the value of the plug-in parameter. If the parameter is defined in the plug-in Java class to be an encrypted parameter, the value here must be encrypted.