If you find yourself using
0→G ;or any other variable ;other lines of code Then, you could use (to save 2 bytesa byte):
DelVar G;other lines of code This is because when you delete a variable (G), it becomes its default value, in this case, 0. Then, you could put another line after the DelVar statement, without a newline. Be careful when putting crucial control statements directly after a DelVar statement.
(Tested on TI-84)