The basic command is either /macro or /m.
You have 9 slots to store your macro, identified by 1 to 9.
/macro new X roll: to assign the desired 'roll'' to
the macro slot identified by 'X'
/macro X: to roll the macro saved in slot X.
/macro list: to see all the macros you have created so far.
/macro del X: to remove the macro stored in slot X.