Scale Justify...

The Scale Justify operation creates a single, justified column of text (sometimes known as “slab text”) from one or more selected text objects. Justification is done by scaling up each line of text to match the width of the longest line. Any text rotation is removed, and the top-to-bottom order of the text is retained.

QuickOps Scale Justify Overview

With at least one text object selected (except text-on-a-path objects, which are not handled), clicking the button brings up the settings dialog:

QuickOps Scale Justify Settings

1. Block Width

Specifies the width of the justified block of text. When the dialog is first brought up, the width will initially be set to that of the longest line of selected text, but it can be adjusted up or down as desired (from 1 pt to 4000 pt). 

2. Line Spacing

Specifies the space between the lines of text, from –1000 pt to 1000 pt. When set to zero, the lines will just touch (remembering that glyphs with ascenders, descenders, serifs, or curves may make it appear as if there is still some space between the lines). Negative values can be used to create overlapping lines of type:

QuickOps Scale Justify Line Spacing

3. Preview

When Preview is enabled, the scale-justified text will be previewed on the artboard, and will update whenever the settings are changed. Turning Preview off will show the text in its original position.