Just as you can specify files with an abbreviation,
it is also possible, in the 's' command, to
use an abbreviation for the string to be used
for substitution. Unfortunately, the characters
used to indicate an abbreviation are quite
different, and you must learn them separately for the
editor and the file-name interpreter. (Sorry about
that, but that's the way the world is.)
The symbol for 'any character' is '.'. Thus
looks for an 'a' followed by anything, and changes those
What will the word "floating" become after
is executed? Type "answer WORD" where WORD is the new version.