[sdiy] My capacity for resistance.

[Seb Francis]

>
> I WILL make the [bread & circuits] link bigger so that it's easier to find.
> But I've had quite enough of fighting with HTML for one day. But if anyone
> can remember what that html tag is that makes a browser think a page is
> past it's useby date and automatically refreshes the content, I'd be most
> grateful.

Very OT, but since (unlike electronics) this is actually my area of expertise ..

It's not an html tag you need - you have to set the expiry date and/or last modified date in the HTTP-response headers.  Most modern browsers (and indeed transparent web-caches which are quite widely used by ISPs, especially in Australia where international bandwidth is expensive) will request the headers to find if a page has changed, but if it doesn't appear to have changed from the headers, they just drop the connection and display the page from the cache.

There are many different ways to set the HTTP-reponse headers (depending on the webserver and setup).  Mail me privately if you want more info.

Seb