What do column flags mean in MySQL Workbench?

In MySQL Workbench table editor, there are 7 column flags available:

PK - Primary Key
NN - Not Null
BIN - Binary
UN - Unsigned
UQ - Create/remove Unique Key
ZF - Zero-Filled
AI - Auto Increment

MySQL Workbench provides DBAs and developers an integrated tools environment for:

• Database Design & Modeling
• SQL Development (replacing MySQL Query Browser)
• Database Administration (replacing MySQL Administrator)