Whatever does the first 5 words means in the (following) quoted sentence may I ask?

Whatever does the first 5 words means in the (following) quoted sentence
may I ask?

Whatever does the first 5 words means in the (following) quoted sentence
may I ask?
"Her character was written out, though Kelly returned for a few episodes
in Season 5."
The above is an excerpt of the following article:
" On "That '70s Show," the veteran actress played the promiscuous elder
sister of Topher Grace's Eric Forman for five years. Her character was
written out, though Kelly returned for a few episodes in Season 5. Then,
she was replaced by Christina Moore in Season 6. "
I assumed a number of things but I can be sure to be wrong in each case.
Appreciate the help immensely!