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#lang pollen
◊ ( define - meta title "optional hyphens" )
◊ hanging - topic [ ( topic - from - metas metas ) ] { Mark a hyphenation location }
The ◊ em { optional hyphen } is usually invisible . The optional hyphen marks where a word should be hyphenated if the word lands at the end of a line . You can put multiple optional hyphens in a word .
Why would you want to do this ? Some words bedevil hyphenation engines . For instance , ◊ em { TrueType } will often get hyphenated as ◊ em { Tru - eType } . To prevent this , I put an optional hyphen in the middle ( ◊ em { True ~ Type } ) so it will be hyphenated correctly .
How do you know whether a word won ’ t be hyphenated correctly ? The problem usually afflicts words that aren ’ t in a standard hyphenation dictionary , like jargon words , unusual proper names , and other words with nonstandard spellings , like trade names . As Justice Potter Stewart might have said , you ’ ll know it when you see it .