This is the compile info for this element term.
Just an abbrev.
Just an abbrev. analogous to erd, trd, etc.
Tells us if, for this element, we need to capture its value length at parse runtime, or we can ignore that.
Tells us if, for this element, we need to capture its content length at unparse runtime, or we can ignore that.
Tells us if, for this element, we need to capture its value length at unparse runtime, or we can ignore that.