Universal Remote Control Customizer URC-300 Owner's Manual page 21

Change the character by using any of the number
6
keys. Each press of the same number button
selects the next character of that number's group,
as shown below.
Once the character you want appears, move to the
7
next space by pressing the RIGHT cursor button.
When you are finished editing the button, press
8
the button you edited and "SAVED" will flash at
the bottom of the display.
To change any other button labels on the same
device, press the next button, then repeat steps 6-8.
If you wish to edit a button on another device,
press the MAIN button once, then repeat Steps 4-8.
Once you've finished editing buttons, press the
9
MAIN button four times to return to normal
operation.
U R C - 3 0 0
A,B,C,1
D,E,F,2
J,K,L,4
M,N,O,5
S,T,U,7
V,W,X,8
19
G,H,I,3
P,Q,R,6
Y,Z,9