Browsing Brazilian Portuguese translation

Translators: This string is associated with a combo box which allows the user to select the set of symbols to be used when Orca presents print strings on a refreshable braille display. Braille symbols vary from language to language due in part to what print letters exist for that language. The other reason braille symbols vary is due to which braille contractions get used. Contractions are shorter forms of commonly-used letter combinations and words. For instance in English there is a single braille symbol for ing (dots 3-4-6), and the letter e (dots 1-5) all by itself represents the word every. The list of rules which dictate what contractions should be used and whether or not they can be used in a particular context are stored in tables provided by liblouis.