Evaluate Mime-Type and Transfer/Data-Type

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# Evaluate Mime-Type and Transfer/Data-Type

Subroutine Name | Executable Example | Viewable Example
--- | --- | ---
W3MIME-DATA MIMEDATA | NAT-RES?source=e3xslt2.xml&lib=sysweb3 NAT-RES?source=composing_natural_logo.jpg&lib=sysweb3 | NAT-RES

> Description

>   Each Program needs to initialize and end the web interface by special programs. The initialisation is done by `W3INIT`. `The` W3PARM PDA must be passed to initialize passed parameters for further use. `W3END` ends the document and prepares the return to the HTTPserver. The `W3PARM` PDA defined at the initial program has to be passed to `W3END`. If `W3*` calls are performed after `W3END`, the written output will not be transferred to the HTTP server.

> Parameters

>   1. W3INIT

>          USING W3PARM /* io/m : Parameter of Subprogram

>   2. W3END

>          USING W3PARM /* io/m : Parameter of Subprogram

>   3. W3PARM

>          1 ##RPC
>            2 VERSION           (A010)     /* i /m : Interface version
>            2 LOG-TIME          (A030)     /* i /m : Timestamp
>            2 RETURN_PAGE       (A250/1:V) /* io/m : Transfer area
>            2 RETURN_PAGE_COUNT (I004)     /* io/m : Bytes sent
>            2 ERROR-NR          (I004)     /*  o/m : Error number

> How To Invoke

>       PERFORM W3INIT ##RPC
>       PERFORM W3END ##RPC