In multilingual surveys, a project text file stores the axis texts in the survey’s default language and their translations in one or more other language. Project text files have a file name extension of .ptf and are referred to as ptf files.

When you compile a multilingual survey, if a ptf file does not already exist, Quantum creates one, names it db.ptf, incorporates the axis texts into it and tags them with the language code defined on the a statement.

However if a ptf file already exists, Quantum does not create a new file, but incorporates the axis texts into the existing file. If there is more than one ptf file, Quantum uses one named db.ptf in preference to any others. If there is more than one ptf file and none are called db.ptf, Quantum uses the first one it encounters.

For more information about multilingual surveys, see Multilingual surveys.