The user can apply a special substitution list to improve the quality of the voice's articulation. The program uses various versions of Microsoft Speech API (SAPI) it allows to alter a voice's parameters, including rate and pitch. The program can read the clipboard content, view the text from AZW, CHM, DjVu, DOC, EPUB, FB2, HTML, LIT, MOBI, ODT, PRC, PDF and RTF files, customize font and background colour, control reading from the system tray or by the global hotkeys. The on-screen text can be saved as a WAV, MP3, MP4, OGG or WMA file.