According to @claudia_dmr,
“After the Pro version is introduced, the Export Dialog and its options will be a part of it. Only default options (File>Export>File format) will be available on the Free version.”
THAT, my friends, is ridiculous.
This is not a “pro” feature. It’s a basic function. Without it, Gravit is useless for design work. Corel really is killing this once-great program.