Here's something you might want to include that I didn't see in the guide.
/echo (Your text here)

/echo displays a message that only you can see in yellowish text. Why is it useful? To tell yourself that a gear and/or macro swap has been completed. Although it takes up a macro line it can be very convenient in letting you know that you've completed a sequence of gear swaps (if you stack your gear swap macros on the same button on different sets and have to press that button 2 or 3 times to finish the swap, for example).

Or, if you use multiple macro sets for one job depending on the situation and often switch between them. I use an entire book of macros on BLM alone. I have all the sets linked via a macro and gear swap set, with /echo messages like "ELEMENTAL AGA3/JA" or "ELEMENTAL IV/V" so I know when I've switched to the set containing all of those spells.