It can be useful to seek unusually short sentences to see whether your originals have been handled as you want. Because Aligner uses full stops, question marks and exclamation marks as sentence-boundary indicators, you will find a string like "Hello! Paul! Come here!" is broken into 3 very short sentences. Depending on your purposes you may wish to consider these as one sentence, e.g. if a translator has translated them as one ("Oi, Paulo, venha cá!") .
This function can also find lower-case lines: where a sentence or paragraph does not start with a capital letter or number -- you will probably want to join it to the one above. This problem is common if the text has been saved as "text only with line breaks" (where an <Enter> comes at the end of each line whether or not it is the end of a paragraph.)
Seeking
Use the Oddities button. Aligner will go to the next possibly problematic sentence or paragraph.
You will see another window showing a diagnosis and a recommendation:
Press OK if you want to accept the recommendation, or another button for a different choice.
Short line setting (default 25 characters) is altered using the Settings button.
There may be several problems:
Here in line 28 of the Portuguese version, the words da Estrela belong with the line above so following the recommendation produced this.
See also: Settings, The technical side..., Finding translation mis-matches, Aligner contents