hello, i would like to know what a preamble is? what i gathered from the recommendation is that it is an option map that has a no. of bits in it. that no. of bits is equivalent to the members of a sequence structure. is this correct? secondly, i am not very clear on the extension root part. i don't understand how is the preamble formed for both the scenarios, if the values of the extension additions are defined and when they are not defined. waiting in anticipation hinna
