change some of the flags with more memorable ones.

[v0lkan]

-ap --append <id>       Appends a piece of text to the given goal with id <id>.
-pr --prepend <id>      Appends a piece of text to the given with id <id>.

-tx, --text <text>      The text to use for appending, prepending, or replacement.
-w, --with <text>      The text to replace with.