Quote:
Old intros/demos use rastports for display of text and scrolltext with an own font, read via diskfont.library, that was a comon way in early amiga days.
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Don't know of which early days you are speaking. When I was writing intros for the Amiga (almost 20 years ago, the real early days), people were using pictures as font sources. See example attachment.
"Library Vector Offset". These are labels so that you can use names for calling functions instead of remembering the numeric offsets. Also "jsr _LVOOpen(a6)" is much more readable than "jsr -30(a6)". The labels are predefined in amiga.lib.