Required variables :plugin$Dir The application directory containing !Boot, !Run etc. files
PlugIn$Type_type Name of plug-in for browser menu
Alias$@PlugInType_type Command to run plug-in as a stand-alone application, no arguments
Optional variables :PlugIn$About_type The directory containing plug-in copyright details
File$Type_type Up to 8 character name describing file format (as normal)
Alias$@RunType_type Command to run plug-in as a standalone application, takes filename as an argument (as normal)
Alias$@HelperType_type Command to run plug-in as a helper application
If a file is embedded with APPLET, EMBED or OBJECT then the Alias$@PlugInType_type variable is used to start the application.
If a file is pointed to with an anchor (eg <A HREF="applets/myapplet.class">) then the file is downloaded and the Alias$@Runtype_type variable is used.
Example !Boot file
Plugin !Boot example
Set Java$Dir <Obey$Dir>
Set File$Type_AE4 Java
Set PlugIn$Type_AE4 Java
Set PlugIn$About_AE4 <Java$Dir>.About
SetMacro Alias$@RunType_AE4 /<Java$Dir>.!RunImage -standalone %%*0
SetMacro Alias$@PlugInType_AE4 /<Java$Dir>.!RunImage -plug-in %%*0
Plugin 'About' directory
A plug-in may display a logo and some associated text (e.g. copyright information) in a browser's window at the user's request. The suggested URL for this is 'about:'. The system variable PlugIn$About_type points to a directory containing text files with optional image (PNG, GIF or JPEG) files.
Each file has a two digit reference number to allow a single plug-in to have multiple logos and copyright entries (e.g. each Replay codec). The file 'Aboutyy', where yy is the two digit reference number, contains the text suitable for inclusion inside a table cell of an HTML document.
For each About file there is an optional image file, of the name 'yywwwwhhhh', where wwww and hhhh are each four digits for the size that the image will be scaled to (usually the same as the actual image size). It is strongly recommended that the width and height are specified, but a filename of just 'yy' is accepted.
If the plug-in has a single copyright message and logo, the filename 'About' can be used as a shortcut for 'About00'. The optional logo must still be called '00wwwwhhhh' or '00'.
It is the browser's responsibility to enumerate all the PlugIn$About_* system variables and compile an HTML document containing all available plug-in details.
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