P is the write version of T.
Have a look at this example to better understand how this work.
..................................2C4......
.#.READ.#........................2M2.......
................................lV4........
.C8...........Cg...........Vl..............
.50O01234567..58T01234567..402Q01234567....
...5............5............45............
...........................................
.#.WRITE.#.................................
...........................................
.C8.C8........Cg.C8........Vl..............
.50X5.........58P5.........402G01..........
...01234567.....01234567......01010101.....
...........................................
Say I would like to shift an input from my keyboard Eastward, similar to how an E command would work, but it actually basically sending that number Eastward until it hits either a halt or the border of my patch. How would I go about doing that?
You could use the L to help move things around:
.D................
........X.........
8l.a.......#BOOM.#
There might also be a clever thing to be done with:
28G.
C...
7.XA