They must follow the regulation of their programme of study, that is take a combination of compulsory and elective courses to obtain an award.
How about '...that is TO take a combination of...'? What does 'that is' mean here?
Can you give more example about this pattern: '...that is...'?
It is an abbreviated form of "that is to say".
You will receive the parcel tomorrow, that is [to say] if the postal workers are not on strike.