Some controls turn up all over Labeljoy: a color picker is a color picker whether it paints a background, a border or a barcode. Each is explained once, here, and the panels that use it link to it.

Sizes and places
Measurements and units	Inches or centimeters, inch fractions, and the few boxes in points or pixels.
Position and size	Where an element is on its label, and how big.
Rotation	The round dial that turns elements, pictures, shapes and fades.
Padding	The space between an element's edge and what's in it.

How things look
Colors	A color or a fade, picked or taken from your data.
Backgrounds	The color behind an element or a label.
Borders	Lines round elements and labels, and the line styles lines and outlines share.
Shapes	Rectangle, circle, star, speech bubble and more, for an element or for the labels themselves.
Shadows	A soft shadow behind the parts of an element you pick.
Fonts	The font list, and what happens with a font this computer doesn't have.

Content
Choosing an image	Where a picture can come from: a file, the internet, a clipart, a scanner, the clipboard, your data.
Number and date formats	How fields, counters and references write numbers and dates.

Changes apply as you make them, and every one can be undone. With several elements selected, a change goes to all of them - see Selecting elements.