Project, Preferences and Slide settings are three key setting options of PicturesToExe.
Project Settings - control various setting parameters for each individual project or AV show
Preferences - provide a range of setting parameters which can be set up as the default for all projects
Slide Settings - provide a range of setting parameters which can be applied to individual slide or to a selected range of slides.
For details on Project Settings, see Project Options
For details on selecting Preferences (Main Menu/settings/Preferences), see Preferences
For details on selecting Slide Settings, see Slide Options