Just because an option in LibreOffice Writer is easy to choose does not mean that it is easy to use. Take, for example, alignment, or how characters are arranged between the left and the right margin on a line. A single click on the Alignment tab of a paragraph style will set the alignment to right, center, left (ragged right), or justified (i.e., evenly distributed between the margins). Yet to use any alignment takes design knowledge and, sometimes, extra effort as well (Figure 1).

Figure 1: LibreOffice Writer offers four alignment choices.

Right Alignment

Aligning letters to the right margin is used the least. Right alignment is used only in layout, such as a title page. A basic rule of layout is that related information, such as the lines of a mailing address should have a common alignment. For instance, an address on a letter is traditionally right aligned. You often find a right alignment on a brochure or diagram as well. Generally, though, only a few lines in a document are likely to have a right alignment, for the simple reason that most European languages read from left to right, and an uneven left margin is harder to read and just looks wrong to most people.

Center Alignment

In the long gone, unlamented days of typewriters, titles were often center aligned, for the simple reason that the options for differentiating the title from the main text were few. Today, however, a title can easily be a different size or font, and a center alignment, like a right one, is only seen in more elaborate layouts.

Left vs. Justified Alignment

Left and justified alignments are the most common choices in layout. However, which one to use depends on the context.

For decades, left alignment was the default on typewriters. Only late model typewriters with a few kilobytes of memory ever managed justified lines. For the most part, industrial typesetting machines alone offered justification -- and even they often required manual tweaks to look their best. Consequently, in many people’s minds, justification is still the main indicator of professional design. Armed with this expectation, today many can be loudly scornful of left alignment.

However, for professional typographers, the choice is more complicated. To start with, the algorithms for justifying lines of text can be very poor, and heavy editing and revision can leave justified lines a mess with unsightly variations in the spaces between characters and words. You can see a small sample of the difficulties by investigating Writer’s options for the last line of a justified paragraph: Start (left-aligned), Center, and Justified. To be fair, some tools, including Writer, have improved greatly over the years, but, in others, users are better off avoiding justification altogether.

Yet even in Writer, justification is not always the best choice. Faced with short sentences, such as an instruction manual with numbered steps or a table with narrow columns, justification can struggle to produce a decent-looking page (Figure 2). Sometimes, a change of fonts, font size, or character spacing on the Position tab helps, but too often such modifications can compromise the overall look of the design by introducing too many changes in the default appearance. Sometimes, a left alignment may also be unsuitable (Figure 3), yet, by contrast, a left alignment tends to look better than justification, even before tweaking. Just as importantly, if a document will be frequently revised, then a left alignment can mean less maintenance. Besides, some designers will deliberately use a left alignment simply out of nostalgia for typewriters. Fortunately, the great advantage of word processors is that changes are easily made, so you can experiment until you find the best alignment for your purposes and aesthetics.

Figure 2: In this three column layout, justification has such an irregular spacing, it is hard to see where a new column begins.

Figure 3: Here, a left alignment produces too many hyphens and lines with only a single word. The font is probably too large.