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Message: <blockquote data-quote="spiderwheels" data-source="post: 597563" data-attributes="member: 99116">During a typical program the size of the displayed picture changes slightly. Sometimes there are two thin black bars down each side of the screen (I mean thin - not the same as a 4/3 picture), sometimes there is a thin black border around the whole picture with a dashed grey line at the top edge and sometimes the picture completely fills the screen - and all this in the same program.Can someone provide an explanation or a link.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin    :D" loading="lazy" data-shortname=":D" /></blockquote>