Concept: Leftloft. Code & Design: Flavio Curella.
set units:
Paper size Custom A5 A4 A3 Letter Tabloid
Width inches millimeters pixels points
Height inches millimeters pixels points
Margin top inches millimeters pixels points
Margin bottom inches millimeters pixels points
Margin left inches millimeters pixels points
Margin right inches millimeters pixels points
Columns
Columns gutter inches millimeters pixels points
Columns width inches millimeters pixels
Baseline inches millimeters pixels points
Columns coloropacity
Baseline coloropacity