How do you customize the way punctuations are pronounced in Orca?

[Linux for blind general discussion]

The YouTube video that was linked was hilarious... though that guy's
system for pronouncing punctuation doesn't seem very practical...

Though, now that the subject has been raised, I'm noticing quite a few
discrepencies in how some punctuation is spoken by Orca versus SBL and
how often it isn't the monosyllabic way*carat versus circumflex at
versus at sign, number versus hash, vertical bar versus v-bar...
Making as many punctuation marks monosyllabic as possible would be
nice.