Documents for checking are accepted in electronic form, as a file with a mandatory text layer, details (author's name, document title, year), and a list of references.
Possible electronic file formats: Microsoft Office (.docx, .rtf), OpenOffice (.org, .odt); PDF or PDF/A with a text layer.
Recommendation: Submit documents in PDF or PDF/A format with a text layer, which prevents the shifting of graphic objects in the file during review.