How many transition tags are allowed under <initial>?

Hello,

chapter 3.6 <initial> defines as children under 3.6.2 <transition>.
While it is common under in other chapter to declare multiplicity,
like "Occurs 0 or more times", this is here missing.

I guess from the description, "this transition MUST NOT contain 'cond'
or 'event' attributes, and MUST specify a non-null 'target'" it could
be stated that multiple occurrences would be superfluous. But would it
not be nicer if there were the elsewhere ubiquitous statement: "Occurs
one time and one time only."

Or is my interpretation faulty?

Regards