Excerpt from Windows Language bar Help on "commands".
Capitalization commands
Say To
"Capitalize" or "Cap that" Capitalize the first letter of every word in
the last phrase or the selected text.
"Uncapitalize" or "No caps that" Make all letters lowercase in the last
recognized phrase or the selected text.
"All caps that" Capitalize all letters in the last phrase recognized or
the selected phrase.
"Cap it phrase" Capitalize the first letter of the first word in the
phrase.
"All caps phrase" Capitalize all the letters of the first word in the
phrase.
"No caps phrase" Make all letters in the first word of the phrase
lowercase.