"Multiple Entry Canada Visitor Visa:
Under this category, you may enter and depart on several occasions during the validity of the Canadian travel visa. In this case, you will need to specify the length of time you require. The length of time subsequently awarded will be decided by an issuing case officer."
Single entry Canada Visitor Visa
This category allows you to visit Canada once for the duration of no more than six months.
However, once in the country you can apply for a Canadian visa extension so long as you do so no later than 30 days before the expiry of the original document.
Under this category, you may enter and depart on several occasions during the validity of the Canadian travel visa. In this case, you will need to specify the length of time you require. The length of time subsequently awarded will be decided by an issuing case officer."
Single entry Canada Visitor Visa
This category allows you to visit Canada once for the duration of no more than six months.
However, once in the country you can apply for a Canadian visa extension so long as you do so no later than 30 days before the expiry of the original document.