We use the text code WATER for various campaigns and events. When a campaign or event has been has been disabled, it no longer shows in the Text to Give Setup table. To reuse the custom text code, I had to enable campaigns to find which the code had been applied to, so that I could change it, thus allowing me to reuse WATER.

It would be nice to be able to see the custom codes that have been used even for disabled campaigns, events, et cetera.