The first concept new Quark 6.1 users need to get their heads around is this program's unique (as far as I know) ability to combine multiple client projects in one file.
The file that you create in 6.1 by going to "File -> New" is called a Project (a project can contain multiple projects?) which doesn't help. :-)more >
These work on Mac or Windows in InDesign 2.X or CS:
Bounce: Choose "About InDesign" from the menu, and when the splash screen comes up, type BOUNCE.
SVG: Same as above, but instead of typing BOUNCE, type SVG (Adobe's interesting vector/web image format)
Rainbow: Choose Stroke Styles from the Stroke palette menu, and create a new striped stroke. It doesn't matter what it looks like, just make sure to name it "Rainbow." Apply the stroke to an object.more >
If you're running Mac OS X Panther, your Software Update should catch this, but if not:
About the Mac OS X v10.3.4 Update
If you've ever wondered what those cryptic error messages mean ("dictstackunderflow" ???) when Distiller balks, or when you open a flaky EPS in Illustrator, or that your printer spits out at you, here's a great reference:
About PostScript Errors