possible to cast more than 5 spells with a macro?

[Exard3k]

So I got a Pal and those tiny heals are quite annoying, so I made a /pause 40, /cast 1 macro.

There are only 5 lines, so 5 casts. Can you do more than that? can you do macro to trigger a macro or fill lines with multiple casts?

[Baler]

Not on p99 or classic.