You can type adjacent signs with `-' , stack signs with `:', group
signs with parenthesis, and use `*' to separate signs on the
same level.
A few examples:
\begin{hieroglyph}
p*t:pt-..-A-..-n:(x:t)*U30-A-xAst-qmA
.end{hieroglyph}
gives
you can type a `=' sign after a `-' or a `:' to indicate a
grammatical ending. More important, a space, or any number of
spaces, tabulations, or newlines, indicate a word
ending
I strongly recommend that you type the word-separation spaces. The
package will then try to cut the lines at word-separations, which is
nicer and easier to read.