That's a funny thought lol
Still, not really! Especially not when you consider these comics are translated from languages whose writing system doesn't use capital letters. Meanwhile, in western use of the Roman system, there is room within orthographic rules to use majuscule and minuscule (sorry I'm not sure of the name in English) alternating or o...... reply
Hi typesetter here ! No because the yelling is usually indicated by font and whether it's bald and italic or not. Some typesetters like to use a seperate font for yelling, and others like to use the same font as the normal speech bubbles but in italic and bold. reply